Residential delivery area · Texas
ZIP Code 78628: Georgetown, TX
ZIP code 78628 uses the postal name Georgetown, Texas and lies entirely in Williamson County (Census 2020 ZIP-county file). About 51,000 people live there (Census Bureau, ACS 2020-2024), the most populous of Georgetown's 3 residential ZIP codes. Median household income is $125,635 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Georgetown (30%) and Serenada (3%), and 2% in smaller places; 66% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Georgetown · 3 residential ZIPs
- County
- Williamson County
- Census places
- Georgetown (30%); Serenada (3%) census-designated place
- Metro area
- Austin-Round Rock-San Marcos, TX
- House district
- TX-31 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 64.7 sq mi · 785 people per sq mi
- PO Box ZIPs
- 78627 also use the name Georgetown
Where is ZIP code 78628?
78628 centers on 30.665°, -97.779° and covers 64.7 square miles of land plus 1.2 of water. It borders 5 ZIP codes: 78633, 78681, 78626, 78642, 78641.
The map draws ZIP code areas only. For the streets inside 78628, 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 78628 compare with the rest of Georgetown?
| Measure | 78628 | In Georgetown | In Williamson County | In TX |
|---|---|---|---|---|
| People (ACS 2020-2024) | 50,822 | 1st of 3 | 6th of 27 | 139th of 1,990 |
| Median household income | $126k | 1st of 3 | 5th of 22 | 89th of 1,172 |
| Median home value | $497k | 1st of 3 | 7th of 24 | 106th of 1,172 |
Its median household income is higher than in 92% of U.S. residential ZIP codes, and it is denser than 76% 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 78628?
The 2020 Census counted 40,378 people in 78628; the ACS, which samples households over 2020-2024, estimates 50,822. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 50,822
- 2020 Census count
- 40,378
- Households
- 19,084
- Median age
- 40.7
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 78628?
Of the 50,822 people the ACS estimates in 78628, 23.7% are under 18 and 17.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (68.3%), then Hispanic or Latino (15.2%).
- Under 1823.7%
- 18 to 6459.1%
- 65 and older17.2%
- White, not Hispanic68.3%
- Hispanic or Latino15.2%
- Asian, not Hispanic8.4%
- Other or two or more4.5%
- Black, not Hispanic3.5%
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 78628 earn?
Median household income is $125,635 (ACS 2020-2024), the 5th highest of the 22 ranked ZIP codes in Williamson County.
- Median household income
- $125,635
- Income per person
- $60,880
- Below the poverty line
- 7.3%
- Unemployed (of the labor force)
- 4.6%
- Adults 25+ with a bachelor's degree
- 55.0%
- Adjusted gross income per tax return, 2022
- $161,22223,870 returns; wages 62% 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 78628?
FHFA's house price index for 78628, built from repeat sales and appraisals of the same homes, rose 95% from 2015 to 2025 and rose 44% from 2020 to 2025, and moved −2.5% in 2025.
- Median home value (owners' estimate)
- $496,600
- Median gross rent
- $1,687
- Homes owned by their occupants
- 75.5%
- Housing units
- 19,856
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 78628?
1,135 business establishments had a location in this ZIP code in 2023, 292 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services204
- Health care and social assistance156
- Construction150
- Retail trade112
- Other services (except public administration)99
- Accommodation and food services88
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 78628?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 78633 | Georgetown | 29,309 | $101k | 5.1 mi |
| 78681 | Round Rock | 56,691 | $138k | 9.2 mi |
| 78626 | Georgetown | 48,072 | $100k | 9.6 mi |
| 78642 | Liberty Hill | 26,434 | $133k | 9.8 mi |
| 78641 | Leander | 99,865 | $135k | 10.9 mi |
| 78674 | Weir | 108 | – | 10.7 mi (near) |
| 78613 | Cedar Park | 89,956 | $126k | 11.1 mi (near) |
| 78665 | Round Rock | 66,171 | $123k | 11.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.