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County ZIP codes · Colorado · FIPS 08105

Rio Grande County, CO ZIP Codes

Rio Grande County, Colorado has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 4 residential and 1 for PO boxes or a single organization. 3 of the residential ones lie mainly in Rio Grande County and 1 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $55,000 in 81132 (Del Norte) to $64,662 in 81144 (Monte Vista) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Rio Grande County?

81125 · Center: $56k81132 · Del Norte: $55k81144 · Monte Vista: $65k81154 · South Fork: $77k8113281154811448112581125 · Center: $56k81132 · Del Norte: $55k81144 · Monte Vista: $65k81154 · South Fork: $77k8113281154811448112581125 · Center: $56k81132 · Del Norte: $55k81144 · Monte Vista: $65k81154 · South Fork: $77k81132811548114481125
The residential ZIP codes of Rio Grande County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 4 postal town names: Monte Vista, Center, Del Norte, South Fork.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 4 residential ZIP codes in Rio Grande County

3 ZIP codes lie mainly in Rio Grande County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Rio Grande County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
81144 Monte Vista 6,543 23 $65k $234k 92%
81132 Del Norte 3,252 5 $55k $210k 51%
81154 South Fork 1,363 4 $77k $511k 65%

Partly in Rio Grande County

Residential ZIP codes mainly in another county that reach at least 1% into Rio Grande County, by their share here
In this county
81125 Center 3,362 13 $56k $149k 17%

Download the 5 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

4 ZIP codes of Rio Grande County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Rio Grande County and in the neighboring counties
ZIPIn Rio GrandeElsewhere
8114492%Alamosa County8%
8112517%Saguache County82%; Alamosa County2%
8113251%Saguache County49%
8115465%Mineral County35%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Rio Grande County without a residential area (GeoNames postal codes)
ZIPPostal name
81135Homelake

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Rio Grande County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Rio Grande County starts with 811.

Three-digit prefixes of Rio Grande County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Rio Grande County's
PrefixSectional centerHereAll codes
811Colorado Springs, CO (SCF 808)532

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.