Colorado County Maps
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Colorado has 64 counties, a population of more than 5 million people, about 528 zip codes and 249 public school districts. Those counties vary widely in population, school enrollment, zip code coverage and local boundary structure. El Paso County has the largest population in the state, while San Juan County has the smallest. Browse the map, population, zip codes, school districts, county subdivisions and county list sections below to explore further. Or, simply start typing in the box below to go directly to that county.
Interactive Colorado County Map
This Colorado county map preview highlights population-by-county context, ZIP code coverage, school districts, and local boundary structure. Full statewide and county-level data packages are available when you need complete downloadable datasets. Click or tap any county to view its maps, trends and data.
Start with a free preview, or go straight to the full Colorado dataset .
Colorado Population By County
Colorado's population was over 5 million in 2020, up 610,931 (13.97%) residents from 2010. El Paso County had the largest population in the state with 730,395 people. Arapahoe and Jefferson Counties also stand out as major population centers. San Juan County was the least populated area in Colorado with only 705 residents. The table below compares Colorado county populations and recent population trends.
The Most Populated Counties In Colorado
| County | Population | Trend (2010-2020) |
|---|---|---|
| El Paso County | 730,395 | ▴ 17.38% |
| Arapahoe County | 655,070 | ▴ 14.52% |
| Jefferson County | 582,910 | ▴ 9.05% |
| Adams County | 519,572 | ▴ 17.66% |
| Larimer County | 359,066 | ▴ 19.84% |
| Download all county population data | ||
County populations reflect the latest state serving context (2020).
Colorado County Map With ZIP Codes
Colorado has about 528 zip codes statewide. El Paso County contains the most zip codes, with 41. County-level zip code maps give a faster and clearer way to understand local coverage as zip boundaries can span county and municipal lines. The maps below highlight a few Colorado counties.
Colorado School Districts By County
Colorado has 249 public school districts with 1,241,726 students enrolled as of 2024. El Paso County has the highest district count in the state. Adams County has the largest total school enrollment. Denver County posted the largest recent enrollment gain. The table below compares county level school district totals and recent enrollment trends across the state.
Largest School Districts in Colorado
| County | Districts | Enrollment | Trend |
|---|---|---|---|
| El Paso County | 17 | 118,290 | ▾ 0.12% |
| Weld County | 16 | 118,301 | ▴ 0.99% |
| Adams County | 12 | 130,973 | ▴ 1.00% |
| Elbert County | 10 | 66,367 | ▾ 0.48% |
| Arapahoe County | 9 | 117,357 | ▴ 0.91% |
| Download all school district data | |||
School district enrollment and trend values reflect the most recent state-level context (2024).
Colorado County Map With County Subdivisions
Colorado has about 209 county subdivisions statewide. These boundaries add another layer of local detail and help show how subdivision lines fit inside county boundaries. The previews below highlight a few counties with available subdivision map coverage.
Get the Full Colorado Data Package
The sections above provide a preview of Colorado county maps and county-level data. The full package includes complete statewide coverage with ready-to-use files for mapping, planning, and analysis.
Everything is organized to save hours of data collection, cleanup, and integration work.
- County map exports and boundary coverage for every county in Colorado
- Statewide GIS layers for ZIP codes, subdivisions, school districts, roads, water, and political boundaries
- Population, demographics, school, housing, and trend context aligned across counties
- Database files, map-ready exports, and documentation designed for faster research workflows
Includes GIS layers, maps, demographics, analytics, database files and planning tools.