Residential delivery area · Texas
ZIP Code 77861: Iola, TX
ZIP code 77861 uses the postal name Iola, Texas and lies entirely in Grimes County (Census 2020 ZIP-county file). About 3,100 people live there (Census Bureau, ACS 2020-2024). Median household income is $67,275 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Iola; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Iola · its only residential ZIP
- County
- Grimes County
- Census places
- Iola
- House district
- TX-10 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 115.2 sq mi · 27 people per sq mi
Where is ZIP code 77861?
77861 centers on 30.722°, -96.109° and covers 115.2 square miles of land plus 3.9 of water. It borders 5 ZIP codes: 77872, 77831, 77808, 77830, 77845.
The map draws ZIP code areas only. For the streets inside 77861, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 77861 compare with the rest of Grimes County?
| Measure | 77861 | In Grimes County | In TX |
|---|---|---|---|
| People (ACS 2020-2024) | 3,065 | 8th of 12 | 1,155th of 1,990 |
| Median household income | $67k | 6th of 6 | 694th of 1,172 |
| Median home value | $233k | not ranked | not ranked |
77861's median home value is not ranked: its 90% margin of error (±$59,682) is more than a quarter of the figure ($232,500). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
Its median household income is higher than in 42% of U.S. residential ZIP codes, and it is denser than 31% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 77861?
The 2020 Census counted 2,850 people in 77861; the ACS, which samples households over 2020-2024, estimates 3,065. Between the 2010 and 2020 censuses its population grew 13.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,065±471 (90% margin)
- 2020 Census count
- 2,850+13.7% since 2010 (2,506)
- Households
- 1,275
- Median age
- 39.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 77861?
Of the 3,065 people the ACS estimates in 77861, 25.4% are under 18 and 24.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (73.4%), then Hispanic or Latino (17.6%).
- Under 1825.4%
- 18 to 6450.5%
- 65 and older24.1%
- White, not Hispanic73.4%
- Hispanic or Latino17.6%
- Other or two or more5.4%
- Black, not Hispanic3.6%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 77861 earn?
Median household income is $67,275 (ACS 2020-2024), the 6th highest of the 6 ranked ZIP codes in Grimes County. It is not measurably different from 2015-2019 ($77,228 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $67,275±$9,221
- Income per person
- $33,404
- Below the poverty line
- 14.7%
- Unemployed (of the labor force)
- 2.1%
- Adults 25+ with a bachelor's degree
- 32.0%
- Adjusted gross income per tax return, 2022
- $96,2301,500 returns; wages 65% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 77861?
FHFA's house price index for 77861, built from repeat sales and appraisals of the same homes, rose 49% from 2020 to 2025, and moved −2.9% in 2025.
- Median home value (owners' estimate)
- $232,500
- Median gross rent
- $1,130
- Homes owned by their occupants
- 85.9%
- Housing units
- 1,488
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 77861?
36 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction10
- Transportation and warehousing5
- Administrative and support and waste management and remediation services5
- Other services (except public administration)5
- Professional, scientific, and technical services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 77861?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 77872 | North Zulch | 2,026 | $87k | 11.3 mi |
| 77831 | Bedias | 3,676 | $58k | 12.0 mi |
| 77808 | Bryan | 15,797 | $113k | 13.1 mi |
| 77830 | Anderson | 3,238 | $103k | 14.7 mi |
| 77845 | College Station | 76,764 | $89k | 14.8 mi |
| 77802 | Bryan | 25,762 | $71k | 13.3 mi (near) |
| 77875 | Roans Prairie | 0 | – | 14.0 mi (near) |
| 77840 | College Station | 54,864 | $30k | 14.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.