{"id":28155,"date":"2025-02-27T17:29:54","date_gmt":"2025-02-27T15:29:54","guid":{"rendered":"https:\/\/www.geopostcodes.com\/en-GB\/?p=28155"},"modified":"2026-04-01T07:01:01","modified_gmt":"2026-04-01T07:01:01","slug":"guide-to-convert-multipolygon-to-polygon-in-postgis","status":"publish","type":"post","link":"https:\/\/www.geopostcodes.com\/en-GB\/blog\/guide-to-convert-multipolygon-to-polygon-in-postgis\/","title":{"rendered":"Guide to Convert Multipolygon to Polygon in PostGIS"},"content":{"rendered":"<style> h2 { padding: 0 0 40px; } h2:not(:first-of-type) { padding: 60px 0 40px; } h3, h4, h5 { padding: 40px 0 20px; } .wp-block-list li { margin-bottom: 20px; } .wp-block-image figcaption, .wp-block-table figcaption { margin-top: 10px; font-size: 78%; text-align: middle; } .wp-block-image, .wp-block-table { margin-bottom: 40px; } .bulb-background { background-color: #D7EFFF; padding: 30px; border-radius: 25px; margin-top: 20px; margin-bottom: 40px; } .wp-block-image img { display: block; margin-left: auto; margin-right: auto; border-radius: 25px; } .bulb-background + h2, .bulb-background + h3, .bulb-background + h4, .bulb-background + h5 { margin-top: 0 !important; padding-top: 0 !important; } <\/style>\n<p> <script> document.addEventListener('DOMContentLoaded', () => { document.querySelectorAll('a').forEach(link => { link.setAttribute('target', '_blank'); link.setAttribute('rel', 'noreferrer noopener'); }); document.querySelectorAll('p').forEach(paragraph => { if (paragraph.innerText.includes('\ud83d\udca1')) { paragraph.classList.add('bulb-background'); } }); }); <\/script><\/p>\n\n\n<h2 class=\"wp-block-heading\">Introduction<\/h2>\n\n\n\n<p>Understanding how to convert multipolygons to individual polygons in PostGIS is crucial for spatial data management and analysis.<\/p>\n\n\n\n<p>Spatial datasets often store multiple distinct areas as a single multipolygon geometry. While this format helps group related areas, individual polygons may be needed for more precise <a href=\"https:\/\/www.geopostcodes.com\/en-GB\/map-data-visualization\/\" target=\"_blank\" rel=\"noreferrer noopener\">map visualization<\/a>, <a href=\"https:\/\/www.geopostcodes.com\/en-GB\/blog\/spatial-analysis\/\" target=\"_blank\" rel=\"noreferrer noopener\">geospatial analysis<\/a>, or integration into logistics and business intelligence systems.<\/p>\n\n\n\n<p>Whether you&#8217;re working with detailed regional boundaries, Postcode zones, or delivery areas, converting multipolygon geometries into individual polygons allows for better spatial querying, improved mapping accuracy, and enhanced data integration in applications like business intelligence dashboards or logistics planning tools.<\/p>\n\n\n\n<p>\ud83d\udca1 Use accurate location data to convert multipolygons to polygons in PostGIS. Our worldwide Postcode and boundaries data is updated weekly, relying on over 1,500 sources. Browse GeoPostcodes&#8217; datasets and <a href=\"https:\/\/public.geopostcodes.com\/portal-signup\" target=\"_blank\" rel=\"noreferrer noopener\">download a free sample here<\/a>.<\/p>\n\n\n\n<p>This guide will walk you through converting multipolygons to polygons in PostGIS, covering key concepts, best practices, and practical solutions to common challenges.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Understanding Polygons and Multipolygons in GIS<\/h2>\n\n\n\n<p>In Geographic Information Systems (GIS), polygons and multipolygons serve as fundamental building blocks for representing real-world geographic features, though they differ significantly in their structure and application. A polygon is a two or three-dimensional shape defined by a series of ordered x, y coordinates that form a closed boundary. Think of a polygon as a single parcel of land or a building footprint \u2013 one continuous area with clear boundaries.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1023\" height=\"348\" src=\"https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/image-1-png.webp\" alt=\"\" class=\"wp-image-28321\" srcset=\"https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/image-1-png.webp 1023w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/image-1-300x102.webp 300w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/image-1-768x261.webp 768w\" sizes=\"(max-width: 1023px) 100vw, 1023px\" \/><figcaption class=\"wp-element-caption\">Understanding difference between Polygon and Multipolygon, GIS Stack Exchange, 2020.<\/figcaption><\/figure>\n\n\n\n<p>Multipolygons, on the other hand, are more complex structures that consist of multiple polygon features grouped together as a single entity. A classic example would be an archipelago, where each island is represented as a separate polygon, but collectively they form one multipolygon feature. This distinction is particularly important when working with spatial data that represents discontinuous geographic features.<\/p>\n\n\n\n<p>For spatial analysts and GIS professionals, understanding these differences is not merely academic \u2013 it directly impacts how we store, analyze, and visualize spatial data. The ability to convert between these formats enables more flexible data analysis and can solve various spatial computing challenges.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"240\" src=\"https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Frame-48095693-5-1024x240.webp\" alt=\"\" class=\"wp-image-29647\" style=\"width:950px;height:auto\" srcset=\"https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Frame-48095693-5-1024x240.webp 1024w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Frame-48095693-5-300x70.webp 300w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Frame-48095693-5-768x180.webp 768w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Frame-48095693-5-1536x361.webp 1536w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Frame-48095693-5-2048x481.webp 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Representing Polygons in PostGIS<\/h2>\n\n\n\n<p>PostGIS extends PostgreSQL&#8217;s capabilities by introducing the specialized geom geometry data type, which provides robust support for storing and manipulating spatial data. When working with polygons in PostGIS, you have multiple options for data representation and creation.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"791\" height=\"449\" src=\"https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Geopostcodes-convert-multipolygon-to-polygon-png.webp\" alt=\"\" class=\"wp-image-29343\" style=\"width:723px;height:auto\" srcset=\"https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Geopostcodes-convert-multipolygon-to-polygon-png.webp 791w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Geopostcodes-convert-multipolygon-to-polygon-300x170.webp 300w, https:\/\/www.geopostcodes.com\/en-GB\/wp-content\/uploads\/2025\/02\/Geopostcodes-convert-multipolygon-to-polygon-768x436.webp 768w\" sizes=\"(max-width: 791px) 100vw, 791px\" \/><\/figure>\n\n\n\n<p>The most common method for creating polygons is using the <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_GeomFromText<\/mark> function, which accepts <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">Well-Known Text<\/mark> (WKT) representation. Here&#8217;s an example:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">CREATE TABLE land_parcels (\n    id SERIAL PRIMARY KEY,\n    parcel_geometry geometry(Polygon, 4326)\n);\n\nINSERT INTO land_parcels (parcel_geometry)\nVALUES (\n    ST_GeomFromText('POLYGON((0 0, 0 1, 1 1, 1 0, 0 0))', 4326)\n);\n\n<\/pre>\n\n\n\n<p>In this example we have insert in our table \u2018<mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">land_parcels<\/mark>\u2019 perfect square.<\/p>\n\n\n\n<p>Alternatively, you can use the <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_GeomFromWKB<\/mark> function for creating polygons from Well-Known Binary (WKB) format, which is particularly useful when working with binary spatial data:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">INSERT INTO land_parcels (parcel_geometry)\nVALUES (\n    ST_GeomFromWKB(E'\\\\001...')\n);\n\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Converting Multipolygons to Separate Polygons<\/h2>\n\n\n\n<p>The <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_Dump<\/mark> function in PostGIS is the primary tool for converting multipolygons into their constituent polygons. This function returns a set of <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">geometry_dump<\/mark> objects, each containing a path and a geometry component. You can find the details of the function <a href=\"https:\/\/postgis.net\/docs\/ST_Dump.html\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a> and a practical example below:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">WITH multipolygon_data AS (\n    SELECT ST_GeomFromText('MULTIPOLYGON(((0 0, 0 1, 1 1, 1 0, 0 0)),((2 2, 2 3, 3 3, 3 2, 2 2)))') as geom\n)\nSELECT (ST_Dump(geom)).geom AS single_polygon\nFROM multipolygon_data;\n<\/pre>\n\n\n\n<p>In this example, the multipolygon consists of a single record containing two squares. By using <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_Dump<\/mark>, we obtain two separate records, each representing one square.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Working with Geom Geometry in PostGIS<\/h2>\n\n\n\n<p>The geom geometry data type in PostGIS is incredibly versatile, supporting various spatial data types and operations. Here are some essential functions for working with geometry objects:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">-- Calculate area of a polygon\nSELECT ST_Area(geometry_column) FROM your_table;\n\n-- Calculate perimeter\nSELECT ST_Perimeter(geometry_column) FROM your_table;\n\n-- Check geometry type\nSELECT ST_GeometryType(geometry_column) FROM your_table;\n\n<\/pre>\n\n\n\n<p>These functions provide crucial information about your spatial features and help ensure data integrity throughout the conversion process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Best Practices for Converting Multipolygons<\/h2>\n\n\n\n<p>When converting multipolygons to individual polygons, following best practices ensures data quality and prevents issues downstream:<\/p>\n\n\n\n<p>Always validate your geometries before and after conversion:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">SELECT ST_IsValid(geometry_column) FROM your_table;\n<\/pre>\n\n\n\n<p>If your geometry is not valid you check the reason with <strong><mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_IsValidReason<\/mark><\/strong> (see the <a href=\"https:\/\/postgis.net\/docs\/ST_IsValidReason.html\" target=\"_blank\" rel=\"noreferrer noopener\">description and examples<\/a> of ST_IsValidReason).<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">SELECT ST_IsValidReason(geometry_column) FROM your_table;\n<\/pre>\n\n\n\n<p>Check for self-intersections:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">SELECT ST_Intersects(a.geometry, b.geometry)\nFROM your_table a, your_table b\nWHERE a.id &lt; b.id;\n<\/pre>\n\n\n\n<p>Maintain spatial indexes for better performance:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">CREATE INDEX spatial_idx ON your_table USING GIST (geometry_column);\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Troubleshooting Common Issues<\/h2>\n\n\n\n<p>Invalid geometries and self-intersecting polygons are common challenges when working with spatial data. Here&#8217;s how to address these issues:<\/p>\n\n\n\n<p>For invalid geometries:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">UPDATE your_table\nSET geometry_column = ST_MakeValid(geometry_column)\nWHERE NOT ST_IsValid(geometry_column);\n\n<\/pre>\n\n\n\n<p>The function <strong><mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_MakeValid<\/mark><\/strong> aims to generate a valid representation of an invalid geometry without discarding any of the input vertices (<a href=\"https:\/\/postgis.net\/docs\/ST_MakeValid.html\" target=\"_blank\" rel=\"noreferrer noopener\">more information in the function<\/a>).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>Converting multipolygons to separate polygons is a fundamental operation in spatial data management that requires a solid understanding of both the underlying concepts and the practical implementation in PostGIS. The process involves using specialized functions like <mark style=\"background-color:var(--ast-global-color-4);color:#c42990\" class=\"has-inline-color\">ST_Dump<\/mark> while maintaining data integrity through validation and proper geometry handling.<\/p>\n\n\n\n<p>Success in this area depends on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Understanding the fundamental differences between polygons and multipolygons<\/li>\n\n\n\n<li>Proficiency with PostGIS functions and the geom geometry data type<\/li>\n\n\n\n<li>Following best practices for geometry validation and error handling<\/li>\n\n\n\n<li>Implementing proper troubleshooting techniques when issues arise<\/li>\n<\/ul>\n\n\n\n<p>By mastering these concepts and techniques, you&#8217;ll be better equipped to handle complex spatial data operations and maintain high-quality geographic information in your database systems. Use accurate geospatial data from <a href=\"https:\/\/www.geopostcodes.com\/en-GB\/\" target=\"_blank\" rel=\"noreferrer noopener\">GeoPostcodes<\/a> to perform data-driven spatial analysis and techniques such as mapping, GIS analysis, and remote sensing. We invite you to browse GeoPostcodes datasets and <a href=\"https:\/\/public.geopostcodes.com\/portal-signup\" target=\"_blank\" rel=\"noreferrer noopener\">download a free sample here<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<div id=\"wp-block-themeisle-blocks-accordion-aa5641a4\" class=\"wp-block-themeisle-blocks-accordion exclusive has-light-content-bg is-style-default\">\n<details class=\"wp-block-themeisle-blocks-accordion-item\"><summary class=\"wp-block-themeisle-blocks-accordion-item__title\"><div><strong><strong>What is the difference between a polygon and a MultiPolygon?<\/strong><\/strong><\/div><\/summary><div class=\"wp-block-themeisle-blocks-accordion-item__content\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>A Polygon is a single closed shape with one exterior ring and optional interior holes. A MultiPolygon contains multiple separate polygons in one geometry object. In PostGIS, Polygons have a single shell with holes, while MultiPolygons can store disconnected polygon geometries under one feature.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/details>\n\n\n\n<details class=\"wp-block-themeisle-blocks-accordion-item\"><summary class=\"wp-block-themeisle-blocks-accordion-item__title\"><div><strong><strong>How do you split a MultiPolygon into polygons in ArcGIS?<\/strong><\/strong><\/div><\/summary><div class=\"wp-block-themeisle-blocks-accordion-item__content\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In ArcGIS, use the &#8220;Multipart To Singlepart&#8221; tool found in the Data Management toolbox under Features. This tool creates separate features for each polygon component while maintaining attribute data. The result is a new feature class with individual polygon geometries.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/details>\n\n\n\n<details class=\"wp-block-themeisle-blocks-accordion-item\"><summary class=\"wp-block-themeisle-blocks-accordion-item__title\"><div><strong>How to convert MultiPolygon to polygon in QGIS?<\/strong><\/div><\/summary><div class=\"wp-block-themeisle-blocks-accordion-item__content\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In QGIS, use Vector \u2192 Geometry Tools \u2192 Multipart to Singleparts. This creates a new layer where each part of the MultiPolygon becomes an individual Polygon feature. All attributes from the original features are preserved in each resulting polygon.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/details>\n\n\n\n<details class=\"wp-block-themeisle-blocks-accordion-item\"><summary class=\"wp-block-themeisle-blocks-accordion-item__title\"><div><strong><strong>How do I convert a polygon ZM to a polygon in ArcGIS?<\/strong><\/strong><\/div><\/summary><div class=\"wp-block-themeisle-blocks-accordion-item__content\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Use the &#8220;Feature Class to Feature Class&#8221; tool with &#8220;Coordinates System Transformation&#8221; and under Geometry Properties, set &#8220;Has Z Values&#8221; and &#8220;Has M Values&#8221; to disabled. Alternatively, use the &#8220;Drop Z\/M&#8221; tool in the 3D Features toolbox to remove Z or M values.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/details>\n\n\n\n<details class=\"wp-block-themeisle-blocks-accordion-item\"><summary class=\"wp-block-themeisle-blocks-accordion-item__title\"><div><strong><strong><strong>How do I convert a MultiPolygon to a single Polygon in PostGIS?<\/strong><\/strong><\/strong><\/div><\/summary><div class=\"wp-block-themeisle-blocks-accordion-item__content\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>To convert a MultiPolygon to Polygon in PostGIS, you need to ensure that your MultiPolygon contains only one polygon. If it does, you can use the ST_GeometryN() function:<\/p>\n\n\n\n<p>SELECT ST_GeometryN(geom, 1) AS single_polygon FROM your_table;<\/p>\n\n\n\n<p>If your MultiPolygon contains multiple polygons, you may need to first union them using ST_Union() before extracting a single polygon.<\/p>\n\n\n\n<p>SELECT ST_Union(geom) AS single_polygon FROM your_table;<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/details>\n\n\n\n<details class=\"wp-block-themeisle-blocks-accordion-item\"><summary class=\"wp-block-themeisle-blocks-accordion-item__title\"><div><strong><strong><strong>How do I handle a Geometry Collection when converting MultiPolygon to Polygon in PostGIS?<\/strong><\/strong><\/strong><\/div><\/summary><div class=\"wp-block-themeisle-blocks-accordion-item__content\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>A Geometry Collection can contain different geometry types, including MultiPolygon and Polygon. To extract and convert MultiPolygon to Polygon in PostGIS, use ST_Dump(), which separates the multiple polygons into individual rows:<\/p>\n\n\n\n<p>SELECT (ST_Dump(geom)).geom AS single_polygon FROM your_table;<\/p>\n\n\n\n<p>This SQL query ensures that each geometry is processed separately, converting a Multi Polygon into distinct single Polygon geometries while preserving spatial accuracy.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/details>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to efficiently convert multipolygon to polygon in PostGIS with this essential guide. Read on for step-by-step instructions.<\/p>\n","protected":false},"author":16,"featured_media":29166,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[29],"tags":[],"class_list":["post-28155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-processing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Guide to Convert Multipolygon to Polygon in PostGIS<\/title>\n<meta name=\"description\" content=\"Learn how to efficiently convert multipolygon to polygon postgis in PostGIS with this essential guide. Read on for step-by-step instructions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.geopostcodes.com\/en-GB\/blog\/guide-to-convert-multipolygon-to-polygon-in-postgis\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Guide to Convert Multipolygon to Polygon in PostGIS\" \/>\n<meta property=\"og:description\" content=\"Learn how to efficiently convert multipolygon to polygon postgis in PostGIS with this essential guide. 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