Residential delivery area · Texas
ZIP Code 78957: Smithville, TX
ZIP code 78957 uses the postal name Smithville, Texas and lies mostly in Bastrop County (89% of its land) with the rest in Fayette County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $69,149 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Rosanky (7%) and Smithville (2%); 91% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Smithville · its only residential ZIP
- County
- Bastrop County (89%); Fayette County (11%)
- Census places
- Rosanky (7%) census-designated place; Smithville (2%)
- Metro area
- Austin-Round Rock-San Marcos, TX
- House districts
- TX-10 (61%), TX-27 (39%) 119th Congress, by share of land
- State
- Texas
- Time zone
- Central
- Land area
- 177.1 sq mi · 60 people per sq mi
Where is ZIP code 78957?
78957 centers on 30.014°, -97.182° and covers 177.1 square miles of land plus 2.1 of water. It borders 8 ZIP codes: 78963, 78602, 78949, 78659, 78953, 78942, 78945, 78941.
The map draws ZIP code areas only. For the streets inside 78957, 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 78957 compare with the rest of Bastrop County?
| Measure | 78957 | In Bastrop County | In TX |
|---|---|---|---|
| People (ACS 2020-2024) | 10,543 | 7th of 14 | 800th of 1,990 |
| Median household income | $69k | 8th of 10 | 662nd of 1,172 |
| Median home value | $260k | 8th of 10 | 483rd of 1,172 |
Its median household income is higher than in 45% of U.S. residential ZIP codes, and it is denser than 45% 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 78957?
The 2020 Census counted 10,214 people in 78957; the ACS, which samples households over 2020-2024, estimates 10,543. Between the 2010 and 2020 censuses its population grew 12.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,543
- 2020 Census count
- 10,214+12.7% since 2010 (9,067)
- Households
- 4,198
- Median age
- 41.8
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 78957?
Of the 10,543 people the ACS estimates in 78957, 22.8% are under 18 and 20.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (65.4%), then Hispanic or Latino (20.3%).
- Under 1822.8%
- 18 to 6457.2%
- 65 and older20.0%
- White, not Hispanic65.4%
- Hispanic or Latino20.3%
- Other or two or more7.6%
- Black, not Hispanic6.1%
- Asian, not Hispanic0.7%
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 78957 earn?
Median household income is $69,149 (ACS 2020-2024), the 8th highest of the 10 ranked ZIP codes in Bastrop County. It is not measurably different from 2015-2019 ($71,713 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $69,149±$9,580
- Income per person
- $37,157
- Below the poverty line
- 11.8%
- Unemployed (of the labor force)
- 3.4%
- Adults 25+ with a bachelor's degree
- 23.1%
- Adjusted gross income per tax return, 2022
- $78,7934,520 returns; wages 60% 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 78957?
FHFA's house price index for 78957, built from repeat sales and appraisals of the same homes, rose 122% from 2015 to 2025 and rose 56% from 2020 to 2025, and moved +7.8% in 2025.
- Median home value (owners' estimate)
- $259,900
- Median gross rent
- $1,383
- Homes owned by their occupants
- 72.6%
- Housing units
- 4,812
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 78957?
180 business establishments had a location in this ZIP code in 2023, 6 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction33
- Retail trade26
- Other services (except public administration)19
- Accommodation and food services18
- Health care and social assistance17
- Manufacturing15
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 78957?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78963 | West Point | 605 | $98k | 11.4 mi |
| 78602 | Bastrop | 38,190 | $90k | 12.0 mi |
| 78949 | Muldoon | 760 | $64k | 13.0 mi |
| 78659 | Paige | 2,660 | $90k | 13.8 mi |
| 78953 | Rosanky | 1,089 | $83k | 15.8 mi |
| 78942 | Giddings | 10,136 | $73k | 17.6 mi |
| 78945 | La Grange | 10,394 | $75k | 18.8 mi |
| 78941 | Flatonia | 3,619 | $77k | 19.8 mi |
| 78662 | Red Rock | 3,015 | $94k | 16.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.