ZIP Codes of Fremont County, CO

Population & People
Population & People
Total Population
49,496
Household Income
Household Income
Median Income
$58,021
Housing
Housing
Total Housing Units
20,537
Business & Economy
Business & Economy
Total Businesses
930
Employment
Employment
Employment Rate
42.04%
Education
Education
Bachelor's Degree+
21.98%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 11 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:11 ZIP Codes (5 Standard, 5 PO Box, 1 Unique) [See All]
Area Code:719
Timezone:Mountain (GMT -07:00)
Local Time:11:52:50 PM
Population:49,496 [See All]
FIPS:08043
CBSA:Canon City, CO
Land Area:1,467 sq mi
Water Area:1 sq mi
Coordinates:38.4009, -105.3652
Quick Link:
https://www.zip-codes.com/county/co-fremont.asp
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Colorado's #16 most populous county
49,496 residents across 11 ZIPs — #16 of 65 Colorado counties.

Standout ZIPs in this County


Most Populous
Canon City · 32,292 people
65.2% of county total
Highest Income
Penrose · $90,417 median
1.6× county average
Largest Land Area
Canon City · 674.6 sq mi
Spans the most ground
Fastest Growth
Cotopaxi · 66.0% (10-yr)
1,480 → 2,457 residents
Most Educated
Penrose · 34.8% bachelor's+
1,210 of 3,473 adults 25+

Things worth knowing about Fremont County


49,496 residents live across 11 ZIPs covering 1,467 sq mi, served by 9 distinct USPS-recognized cities.

Population moved from 46,650 to 49,496 from 2014 to 2024 — a +6.1% change. 6 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 81240 (Penrose, $90,417 median) and poorest ZIP 81221 (Coal Creek, $34,000) are 13.0 miles apart — a 2.7× income gap across local geography.

Median home values vary 2.4× across this county — from $195,200 in 81244 (Rockvale) to $474,600 in 81233 (Howard).

Density varies 56× across the county — from 6 people/sq mi in 81223 (Cotopaxi) to 343 in 81244 (Rockvale).

Educational attainment ranges from 8.3% bachelor's+ in 81222 (Coaldale) to 34.8% in 81240 (Penrose) — the breadth of educational profiles across the area.

Within Colorado, this is the #16 most populous of 65 counties and ranks #49 for median household income with the #32 fastest decade growth .

Hosts 1 single-entity Unique ZIP: 81290Federal Correctional Complex .

Weighted by population, the typical household earns about $64,167 across the county — reflecting what a typical resident sees, not a simple ZIP average.

22.0% of adults age 25+ hold a bachelor's degree or higher (8,486 of 38,607 reporting).

5 Standard delivery, 5 PO Box only, 1 single-entity Unique ZIPs serve this county.

Stories about Fremont County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
1,467
square miles
Avg density
33.7
people per sq mi
Population
49,496
across 11 ZIPs
Canon City
674.6 sq mi
32,292 residents
Cotopaxi
401.7 sq mi
2,457 residents
Penrose
155.5 sq mi
4,800 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Canon City

All ZIP Codes in Fremont County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
81212Canon CityStandard32,292$64,235674.66.9%
81226FlorenceStandard7,459$53,969146.6-17.9%
81240PenroseStandard4,800$90,417155.529.8%
81223CotopaxiStandard2,457$51,889401.766.0%
81233HowardStandard966$60,38654.0-17.9%
81244RockvalePO Box660$51,2501.995.3%
81222CoaldalePO Box53831.142.3%
81221Coal CreekPO Box324$34,0001.218.2%
81232HillsidePO Box00.0-100.0%
81290FlorenceUnique0.0
81215Canon CityPO Box0.0

Adjacent & Nearby Counties