State profile · CO
Colorado ZIP Codes
Demographics, income, and housing across every ZIP code in Colorado, benchmarked against all 50 states, DC and Puerto Rico.
- 525
- ZIP codes
- 5,029,374
- Population
- $88,682
- Avg ZIP income
- 64
- Counties
The verdict
Texas leads ZIP coverage at 1,935 ZCTAs (#1 of 52). That is not the income board: New Jersey's unweighted average ZIP household income is $121,992 (#1 of 52) on 595 ZCTAs. Colorado sits #28 of 52 by ZIP count at income #13.
- Texas
- ZIP-count #1 (1,935)
- New Jersey
- income #1 ($121,992)
- #28
- of 52 by ZIP count
- #13
- of 52 by avg income
ZIP-count and income are separate boards among 52 reporting states and territories. Income is the unweighted mean of each ZIP's ACS 2019–2023 median household income, so a rural code counts the same as a dense metro.
Above-median income on a shorter ZIP list (525 codes · 384 cities). Household income averages $88,682 (13th of 52 by avg ZIP income). Compact geography means city pages carry more of the contrast than a giant county table; open the largest city first, then one smaller market, rather than scanning every ZIP.
The largest city, Denver (958,706), holds a moderate share (~19%) of state ZIP population. Expect a primary metro plus a long tail of mid-size markets: the top-cities chart and county RankBars both matter, and a two-ZIP compare inside vs outside Denver usually beats reading the state average alone.
Compact ZIP geography: the state page is closer to a directory than a mega-atlas. Prefer the largest city page and its primary ZIP over scanning every county, and keep the FAQ answers as the quick census totals.
Largest cities in Colorado
Top 10 cities by population in Colorado
Total resident population aggregated from every ZIP code the Census assigns to each city.
- Denver
Denver, CO
958,706 residents
- Colorado Springs
Colorado Springs, CO
525,713 residents
- Aurora
Aurora, CO
389,246 residents
- Littleton 302,400
Littleton, CO
302,400 residents
- Fort Collins 175,625
Fort Collins, CO
175,625 residents
- Pueblo 151,815
Pueblo, CO
151,815 residents
- Arvada 122,111
Arvada, CO
122,111 residents
- Boulder 120,932
Boulder, CO
120,932 residents
- Longmont 117,461
Longmont, CO
117,461 residents
- Grand Junction 103,017
Grand Junction, CO
103,017 residents
What this shows Denver leads, but several peers sit close enough that this top-10 chart is a shortlist, not a single-city story – compare two of those metros before trusting the state mean.
Counties in Colorado
Which cities have the most ZIPs in Colorado?
Side-by-side: Compare 80013 vs 80015 →
ZIP Codes in Colorado
More CO ZIP codes
Official Data Resources for Colorado
Compact ZIP geography: start at Census ACS for Colorado, then BLS wages for the labor-market side of the same small map.
Frequently Asked Questions
Is Colorado compact enough to browse ZIP by ZIP?
Yes – 525 codes and 64 counties put Colorado in compact geography. Prefer the largest city page and its primary ZIP; the roll-ups here are quick census totals, not a substitute for opening one urban and one thin-edge code.
Does Colorado's above-median ZIP income mean every market is expensive?
No. The unweighted ZIP mean ($88,682) still mixes dense suburbs with thinner edges, and home values average $484,372. Open the densest metro and one thin-edge county before reading affordability from the state line alone.
Which Colorado cities should I open first?
Start with Denver (958,706, ~19% of ZIP population), then one mid-size market from the largest-cities chart. A two-ZIP compare inside vs outside Denver usually beats reading the state average alone. Other large markets include Colorado Springs, Aurora, Littleton.
Take this with you
What to do with Colorado's numbers, next.
- See how Colorado compares to a neighboring state on the same Census fields Compare states
- Check where Colorado's ZIP codes rank nationally on income, education, or homeownership View national rankings
- Save a ZIP code to your shortlist to track alongside others you're considering View your shortlist
Figures describe 2019–2023 ACS 5-Year Estimates aggregated from ZIP Code Tabulation Areas (ZCTAs), Census Bureau approximations of USPS ZIP codes, not any single address.
Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2019–2023); USPS ZIP Code Tabulation Areas via the HUD USPS Crosswalk.
Read our methodology to see how this data is sourced, computed, and verified.