ZIP code · Jaroso · Colorado · United States
ZIP code 81138 — Jaroso
ZIP code 81138 serves Jaroso, Colorado.
- Postal code
- 81138Single source Value from one source, not cross-checked.
- City
- Jaroso
- County
- Costilla FIPS 08023
- State
- Colorado
- Country
- United States
- Coordinates
- 37.0028, -105.6242 — precision precise (locality)
View on OpenStreetMap - Population
- 27 (ZCTA, ACS 5-year)
- Population density
- 1 / sq mi
- Land area
- 20.1 sq mi (52.1 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $0
- Households
- 27
- Housing units
- 38
- Congressional district
- CO-3 (119th Congress)
- USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
- Area code
- 719 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 81138 with another ZIP · ZIPs within 25 miles · distance from 81138
Map of ZIP code 81138
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Jan (avg low 6°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 37 | 41 | 52 | 58 | 68 | 79 | 82 | 79 | 74 | 63 | 49 | 39 |
| Avg low °F | 6 | 12 | 23 | 27 | 35 | 42 | 48 | 47 | 39 | 28 | 18 | 9 |
| Precip in | 0.4 | 0.5 | 0.3 | 0.6 | 0.7 | 0.8 | 1.5 | 1.3 | 1.0 | 0.9 | 0.5 | 0.4 |
NOAA 1991–2020 climate normals from the nearest station: SAN LUIS 1 S (17.3 mi) · NOAA NCEI
Places in ZIP 81138
- 1 places of worship
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page