United States Administrative Divisions

What is the hierarchy of administrative divisions in United States?

The United States operates as a federal republic with 50 states. Most states are subdivided into counties or county equivalents.

Here’s a breakdown of the hierarchy:

1. States and Federal District: The United States is divided into 50 states, a federal district (Washington, D.C.), and several territories.

2. Counties and County Equivalents: States are subdivided into counties or county equivalents, such as parishes in Louisiana and boroughs in Alaska.

3. Municipalities and Townships: Counties are further divided into municipalities (cities, towns, villages) and, in many states, townships or similar minor civil divisions.

List of United States's administrative divisions with their counts and names

These are the summarized administrative divisions. The full dataset is available in the Download Center.

isocountryadmin level 1admin level 2admin level 3admin level 4
USUnited StatesAlabama (State)67 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesAlaska (State)11 Census areas, 19 BoroughsThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesArizona (State)15 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesArkansas (State)75 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesCalifornia (State)58 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesColorado (State)64 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesConnecticut (State)9 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesDelaware (State)3 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesFlorida (State)67 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesGeorgia (State)159 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesHawaii (State)5 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesIdaho (State)44 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesIllinois (State)102 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesIndiana (State)92 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesIowa (State)99 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesKansas (State)105 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesKentucky (State)120 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesLouisiana (State)64 ParishesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMaine (State)16 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMaryland (State)24 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMassachusetts (State)14 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMichigan (State)83 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMinnesota (State)87 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMississippi (State)82 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMissouri (State)115 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesMontana (State)56 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNebraska (State)93 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNevada (State)17 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNew Hampshire (State)10 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNew Jersey (State)21 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNew Mexico (State)33 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNew York (State)62 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNorth Carolina (State)100 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesNorth Dakota (State)53 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesOhio (State)88 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesOklahoma (State)77 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesOregon (State)36 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesPennsylvania (State)67 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesRhode Island (State)5 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesSouth Carolina (State)46 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesSouth Dakota (State)66 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesTennessee (State)95 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesTexas (State)254 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesU.S. Armed Forces - Americas (US Armed Force)This level doesn’t exist for this country.This level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesU.S. Armed Forces - Europe (US Armed Force)This level doesn’t exist for this country.This level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesU.S. Armed Forces - Pacific (US Armed Force)This level doesn’t exist for this country.This level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesUtah (State)29 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesVermont (State)14 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesVirginia (State)133 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesWashington, D.C. (Federal District)This level doesn’t exist for this country.This level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesWashington (State)39 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesWest Virginia (State)55 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesWisconsin (State)72 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.
USUnited StatesWyoming (State)23 CountiesThis level doesn’t exist for this country.This level doesn’t exist for this country.

Why is building an Administrative Divisions Database complex?

The complexity arises from inconsistent global standards, frequent boundary changes, non-uniform naming conventions (e.g., “suburb” in Australia vs. “county” in the US), and variations in administrative levels across countries. Integrating and harmonizing data from multiple sources requires advanced normalization, versioning, and geospatial validation techniques.

How does GeoPostcodes solve the problem for you?

Our standardized database overcomes the complexity of different administrative division
systems worldwide. Our database follows a unified structure that you can integrate
seamlessly into your system or platform of choice without needing to become an expert in
each country’s unique administrative hierarchy.

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