Fremont

Source:

Colorado

Fremont is a county in Colorado with 9 ZIP codes and a total population of 46,587. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.

Fremont is a county inside Colorado (FIPS code 08043) that contains 9 USPS ZIP codes covering a combined population of 46,587 according to Census ACS 5-Year Estimates. Counties are the natural bridge between state-level summaries and ZIP-level detail — crime statistics, HUD Fair Market Rents, and childcare pricing are all published at the county level, while household income and housing values are published at the ZIP level. This page reconciles the two views so you can see which ZIPs drive the county totals.

The 9 ZIPs listed below are ordered by population and each links to the full ZIP detail page with Census demographics, housing, income, home-price history, and cross-agency inputs. The most populated ZIP in Fremont is 81212 covering Canon City with 29,742 residents at 19 people per square mile. Population density across ZIPs in this county varies — use the density column to spot urban cores versus rural delivery areas. A single county can contain both a dense downtown ZIP and a large rural ZIP covering several hundred square miles.

Because Fremont uses FIPS code 08043, it joins cleanly to county-level federal datasets: HUD Fair Market Rent tables, FBI Uniform Crime Report data, and the Department of Labor National Database of Childcare Prices all key off the same code. That is how neighborhood scorecards combine ZIP-level Census demographics with county-level safety and affordability metrics. All data on this page comes from U.S. Census Bureau ACS 2023 5-Year Estimates and USPS ZIP Code Tabulation Area files — no estimates, no proprietary sources, no editorial scoring.

9

Total ZIPs

46,587

Total Population

ZIP Codes in Fremont

Side-by-side: Compare 81212 vs 81226 →

ZIP Code City Population Density
81212 Canon City 29,742 19
81226 Florence 9,066 43
81240 Penrose 4,323 11
81223 Cotopaxi 1,639 2
81233 Howard 823 4
81244 Rockvale 398 42
81221 Coal Creek 310 80
81222 Coaldale 263 3
81232 Hillside 23 5

What are common questions about ZIP codes in this county?

What is the population of Fremont?
Fremont has a total population of 46,587 across 9 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Fremont?
Fremont includes 9 ZIP codes: 81212, 81226, 81240, 81223, 81233, 81244, 81221, 81222, 81232.
What is the median household income in Fremont?
Median household income data for individual ZIP codes in Fremont is available on each ZIP code's detail page. Visit any ZIP code link below to see income, housing, and demographic data.

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →

Source: HUD USPS Crosswalk (ZIP-to-county mapping). Verify with HUD →

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.