ZIP code · Iola · Texas · United States
ZIP code 77861 — Iola
ZIP code 77861 serves Iola, Texas.
- Postal code
- 77861Single source Value from one source, not cross-checked.
- City
- Iola
- County
- Grimes FIPS 48185
- State
- Texas
- Country
- United States
- Coordinates
- 30.7326, -96.0911 — precision precise (locality)
View on OpenStreetMap - Population
- 2,785 (ZCTA, ACS 5-year)
- Population density
- 24 / sq mi
- Land area
- 115.2 sq mi (298.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $67,857
- Per-capita income
- $46,029
- Median age
- 46.8
- Households
- 1,210
- Housing units
- 1,363
- Median home value
- $260,400
- Median gross rent
- $1,146 / month
- Congressional district
- TX-10 (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 936Telephone 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 77861 with another ZIP · ZIPs within 25 miles · distance from 77861
Map of ZIP code 77861
Climate — monthly normals
Warmest month Aug (avg high 96°F), coldest Jan (avg low 37°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 62 | 66 | 72 | 79 | 85 | 92 | 95 | 96 | 91 | 82 | 71 | 64 |
| Avg low °F | 37 | 41 | 47 | 54 | 63 | 69 | 72 | 71 | 65 | 55 | 45 | 38 |
| Precip in | 4.4 | 3.4 | 3.4 | 3.4 | 4.9 | 3.8 | 2.9 | 3.4 | 3.9 | 4.7 | 4.3 | 4.4 |
NOAA 1991–2020 climate normals from the nearest station: MADISONVILLE (17.5 mi) · NOAA NCEI
Places in ZIP 77861
- 2 schools
- 1 parks
- 1 gyms & sports centres
- 4 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