ZIP Codes of Rio Grande County, CO

Population & People
Population & People
Total Population
14,520
Household Income
Household Income
Median Income
$63,272
Housing
Housing
Total Housing Units
8,423
Business & Economy
Business & Economy
Total Businesses
434
Employment
Employment
Employment Rate
55.72%
Education
Education
Bachelor's Degree+
33.18%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:5 ZIP Codes (4 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:719
Timezone:Mountain (GMT -07:00)
Local Time:2:11:34 PM
Population:14,520 [See All]
FIPS:08105
Land Area:1,706 sq mi
Water Area:1 sq mi
Coordinates:37.6633, -106.2826
Quick Link:
https://www.zip-codes.com/county/co-rio-grande.asp
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Colorado's #32 most populous county
14,520 residents across 5 ZIPs — #32 of 65 Colorado counties.

Standout ZIPs in this County


Most Populous
Monte Vista · 6,543 people
45.1% of county total
Highest Income
South Fork · $77,177 median
1.2× county average
Largest Land Area
Del Norte · 735.5 sq mi
Spans the most ground
Fastest Growth
Center · 3.4% (10-yr)
3,251 → 3,362 residents
Most Educated
South Fork · 48.2% bachelor's+
538 of 1,117 adults 25+

Things worth knowing about Rio Grande County


14,520 residents live across 5 ZIPs covering 1,706 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 14,912 to 14,520 from 2014 to 2024 — a -2.6% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 81154 (South Fork, $77,177 median) and poorest ZIP 81132 (Del Norte, $55,000) are 19.0 miles apart — a 1.4× income gap across local geography.

Median home values vary 3.4× across this county — from $148,700 in 81125 (Center) to $511,300 in 81154 (South Fork).

Density varies across the county — from 4 people/sq mi in 81154 (South Fork) to 21 in 81144 (Monte Vista).

Educational attainment ranges from 27.4% bachelor's+ in 81125 (Center) to 48.2% in 81154 (South Fork) — the breadth of educational profiles across the area.

Within Colorado, this is the #32 most populous of 65 counties and ranks #45 for median household income .

Weighted by population, the typical household earns about $61,725 across the county — reflecting what a typical resident sees, not a simple ZIP average.

33.2% of adults age 25+ hold a bachelor's degree or higher (3,502 of 10,553 reporting).

4 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Rio Grande 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
1,706
square miles
Avg density
8.5
people per sq mi
Population
14,520
across 5 ZIPs
Del Norte
735.5 sq mi
3,252 residents
South Fork
351.1 sq mi
1,363 residents
Center
315.2 sq mi
3,362 residents

All ZIP Codes in Rio Grande County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
81144Monte VistaStandard6,543$64,662304.6-6.7%
81125CenterStandard3,362$56,250315.23.4%
81132Del NorteStandard3,252$55,000735.50.1%
81154South ForkStandard1,363$77,177351.1-2.4%
81135HomelakePO Box0.0

Adjacent & Nearby Counties