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ZIP Code 78621 - Elgin Texas

Overview

ZIP Code 78621 is located in Elgin Texas. Portions of 78621 are also in Webberville and Manor and McDade. 78621 is primarily within Bastrop County, with some portions in Williamson County and Travis County. Regionally, 78621 is located in Metro Austin.

ZIP Code 78621 Quick Stats

ZIP Code NameElgin
Primary CountyBastrop County
ZIP Code TypeStandard
Population (2022)26,133
Area Code(s)512 / 737
Current Time
CDT

ZIP Code 78621 Map

Map of ZIP Code 78621 in Elgin, TX — click to open interactive map

78621 Demographics

78621 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in Texas based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 78621 is White. The majority race/ethnicity attending public schools in 78621 is Hispanic. The current unemployment level in 78621 is 4.1%.

Population26,133
Population Growth Rate11.94%
Population Density136 People per Square Mile
Total Households7,624
Percentage High Income Households2.6%
Median Household Income (2021)$85,262
Average Adjusted Gross Income (2021)$410,760
Current Unemployment Rate (May 2026)4.1%
Sales Tax Rate (2025)8.2%
Majority Race/EthnicityWhite - 53.09%
Public School Majority Race/EthnicityHispanic - 73.12%

78621 Race/Ethnicity Breakdown

Race/EthnicityTotalPercentage
White15,01353.09%
Black3,17211.22%
Hispanic9,84734.82%
Asian1630.58%
Native American810.29%
Hawaiian/Pac. Islander00%

78621 Public School Race/Ethnicity Breakdown

Race/EthnicityTotalPercentage
White64514.3%
Black46110.22%
Hispanic3,38475%
Asian110.24%
Native American50.11%
Hawaiian/Pac. Islander60.13%

78621 Educational Attainment Levels

Highest Education LevelTotalPercentage
Less Than 1 Year of College1,1039.63%
Bachelor Degree1,32811.6%
High School Diploma3,56931.16%
No High School Diploma3322.9%
GED or Alternate6255.46%
1 or More Years of College2,76624.15%
Associates Degree1,1059.65%
Masters Degree5034.39%
Professional Degree470.41%
Doctorate Degree750.65%

78621 Geography

Coordinates30.33042717, -97.36329651
Adjacent ZIP Codes
Cities/Towns in 78621
RegionMetro Austin
Metropolitan/Micropolitan Stat AreaAustin-Round Rock-Georgetown, TX
Time ZoneCentral Daylight Time
IANA TimezoneAmerica/Chicago
Area193 Square Miles

78621 Weather and Climate Data

Plant Hardiness ZoneZone 8b: 15F to 20F
Average First Frost DateNovember 21 - 31
Average Last Frost DateMarch 1 - 10
Koppen-Geiger Climate ZoneCfa - Humid Subtropical Climate
Ecoregion32a - Northern Blackland Prairie
78621 Annual Climate Data
JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)39435057657073726859494157
Avg Max Temp (°F)61667480869296969182716380
Avg Precip (In.)2.322.182.412.524.733.951.941.973.114.013.222.534.85

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