Colorado County Map with Cities
Explore county and ZCTA boundaries
Counties: generalized 2025 TIGERweb. ZIP areas: 2020 Census ZCTAs, not USPS delivery ZIP borders. These datasets are different vintages.
Use the load button to fetch the dated Census geometry.
| Geographic feature | GEOID | Land area (km²) |
|---|
Source: U.S. Census Bureau TIGERweb. The service can be unavailable or rate-limited. Do not treat estimates as legal property boundaries.
Explore geography, source year and identifier definitions before using the map.
Explore this historical reference layer and search its county or county-equivalent names and FIPS identifiers. Alphabetical list as contained in the bundled historic dataset. This is not a verified current count. 64 reference entries Source limitations: Geometry from bundled Basemap Colorado Map
County and County-Equivalent Reference List
County / equivalent FIPS (dataset) Adams 08001 Alamosa 08003 Arapahoe 08005 Archuleta 08007 Baca 08009 Bent 08011 Boulder 08013 Broomfield 08014 Chaffee 08015 Cheyenne 08017 Clear Creek 08019 Conejos 08021 Costilla 08023 Crowley 08025 Custer 08027 Delta 08029 Denver 08031 Dolores 08033 Douglas 08035 Eagle 08037 El Paso 08041 Elbert 08039 Fremont 08043 Garfield 08045 Gilpin 08047 Grand 08049 Gunnison 08051 Hinsdale 08053 Huerfano 08055 Jackson 08057 Jefferson 08059 Kiowa 08061 Kit Carson 08063 La Plata 08067 Lake 08065 Larimer 08069 Las Animas 08071 Lincoln 08073 Logan 08075 Mesa 08077 Mineral 08079 Moffat 08081 Montezuma 08083 Montrose 08085 Morgan 08087 Otero 08089 Ouray 08091 Park 08093 Phillips 08095 Pitkin 08097 Prowers 08099 Pueblo 08101 Rio Blanco 08103 Rio Grande 08105 Routt 08107 Saguache 08109 San Juan 08111 San Miguel 08113 Sedgwick 08115 Summit 08117 Teller 08119 Washington 08121 Weld 08123 Yuma 08125 UScounties shapefile (EPSG:4269), source vintage not verified. Do not quote its numeric totals as present-day administrative counts. Downloaded SVG files include no legal accuracy warranty.
Understanding the county-equivalent system in Colorado
Some city and county boundaries overlap, while unincorporated areas lie outside municipal limits. County maps must state the record year and jurisdiction definition. County-equivalent units are the level used in many Census datasets; state-level terminology and changes over time can affect counts and boundaries.
Examples of Colorado county GEOIDs
| Legacy reference name | Five-digit GEOID | County part |
|---|---|---|
| Adams | 08001 |
001 |
| Alamosa | 08003 |
003 |
| Arapahoe | 08005 |
005 |
| Archuleta | 08007 |
007 |
| Baca | 08009 |
009 |
| Bent | 08011 |
011 |
The first two FIPS digits identify the state in this dataset (08); the following three digits identify a county or county-equivalent record. Preserve leading zeros when storing these IDs in spreadsheets, CSV or databases.
How to read and verify the county map
- Start with the state outline and use the on-page search to find a county or full FIPS code.
- Check whether the entry represents a county, parish, borough, census area or independent city.
- Use the source-year label when referencing boundaries or computing statistics.
- For modern population, area or county-seat statistics, join this table to a verified dated government source rather than guessing from the map.
County lists versus postal addresses
A ZIP code, county name and postal city serve different purposes. A mailing address can use a neighboring city’s name, and one ZIP can intersect several counties. Use a point-in-polygon lookup against a properly dated jurisdiction layer when an exact address-to-county answer matters.
Official data to cross-check
The U.S. Census Bureau publishes 2025 Gazetteer county tables with area and representative coordinate fields, and TIGER/Line boundaries. The Gazetteer files do not include population; a separately dated Census or ACS table is required for that value.
How to use the Colorado county GEOID list
Our bundled Colorado reference includes 64 county or county-equivalent names. These are identifiers from a historical/unverified-vintage dataset, not a verified current list of official county populations or boundaries. Use the first two digits to recognize the state FIPS prefix 08.
| County | Five-digit GEOID | County suffix |
|---|---|---|
| Adams | 08001 | 001 |
| Alamosa | 08003 | 003 |
| Arapahoe | 08005 | 005 |
| Archuleta | 08007 | 007 |
| Baca | 08009 | 009 |
| Bent | 08011 | 011 |
| Boulder | 08013 | 013 |
| Broomfield | 08014 | 014 |
| Chaffee | 08015 | 015 |
| Cheyenne | 08017 | 017 |
| Clear Creek | 08019 | 019 |
| Conejos | 08021 | 021 |
| Costilla | 08023 | 023 |
| Crowley | 08025 | 025 |
| Custer | 08027 | 027 |
| Delta | 08029 | 029 |
| Denver | 08031 | 031 |
| Dolores | 08033 | 033 |
| Douglas | 08035 | 035 |
| Eagle | 08037 | 037 |
| El Paso | 08041 | 041 |
| Elbert | 08039 | 039 |
For publication-grade administrative statistics, join county GEOIDs to a specified release of the US Census geography/ACS tables. County-seat, income and population columns must be separately sourced and labeled by year. A postal ZIP can cross a county line, so county matching from a ZIP alone is not always exact.
Official cross-checks: Census TIGER/Line geographic files · Census ACS data.
10 questions about Colorado
Questions based on search intent and competitor topics; not a verified Google People Also Ask feed.
How many counties or county equivalents are listed for Colorado?
The bundled reference currently contains 64 entries for Colorado. Because the underlying source vintage is not confirmed against the latest Census release, verify the authoritative current count before quoting it.
What is the county FIPS code for Colorado?
Colorado has state-level FIPS prefix 08. A complete county GEOID combines the two-digit state code and a three-digit county code. For example, Adams has the stored GEOID 08001.
How do I locate a county on the Colorado map?
Use the county-name/FIPS table and consult an authoritative labeled map to match a name to its boundary. A point near a border needs a precise coordinate-based check.
Can I download a blank Colorado county map?
Check the associated printable-map page. County outlines require actual county geometry; an exterior state outline alone does not provide individual county borders.
Does the list include all current county equivalents in Colorado?
The page displays records in the bundled historical reference, not a certified current list. Independent cities and similar county equivalents require careful definition.
Is the Colorado county data from the latest Census year?
No current-vintage certification is claimed for this local dataset. Compare names and GEOIDs against a dated TIGER/Line or Census Gazetteer file.
What is the difference between a county and a ZIP Code in Colorado?
County boundaries are government/statistical administrative areas; ZIP Codes are postal delivery identifiers and often cross counties. ZIP Code Tabulation Areas are Census approximations.
Can I look up a Colorado county by address?
An authoritative geocoding service or Census Geocoder can map an address to an official county. County names alone do not determine the county of every address.
Where do I find county population and land area for Colorado?
Use a named Census population-estimate vintage for people and a Gazetteer/TIGER data year for area. Avoid mixing Census years when calculating density or ranks.
Can I use Colorado county borders for property or legal decisions?
No. The reference is intended for education and general exploration. Property and administrative boundary decisions require current authoritative local records and licensed surveys where appropriate.
Editorial and data status: This is an unpublished reference draft. The information must be checked before the page can be treated as current geographic data or production-ready research.