US ZIP Code Map

ZIP code

78665

Round Rock, TX

STANDARD

78665 covers Round Rock in Williamson County, with 64,087 people in the ACS estimate.

Map of 78665, Round Rock

ZIP code map

ACS population

64,087

Median household income

$117,240

Median home value

$438,700

About ZIP code 78665

Type

STANDARD

City

Round Rock

County

Williamson County

Timezone

America/Chicago

Area codes

512, 737

Land area

24.1 sq mi

Water area

0.36 sq mi

Households

24,678

Median gross rent

$1,945

More enterprise fields

Timezone
America/Chicago
Area Codes
512, 737
World Region
NA
Country
US
Housing Count
22,485
Irs Estimated Households
30,230
Population Count
61,577
Irs Estimated Population
61,260

People in 78665

Race

  • White33,310
  • Black or African American7,035
  • American Indian or Alaska Native402
  • Asian6,264
  • Native Hawaiian and Pacific Islander135
  • Other race4,194
  • Two or more races10,237

Hispanic or Latino (any race): 15,400

Age

  • Under 109,275
  • 10 to 199,293
  • 20 to 297,532
  • 30 to 3910,034
  • 40 to 499,645
  • 50 to 597,276
  • 60 to 694,605
  • 70 to 792,726
  • 80 and older1,191

Income and housing in 78665

Poverty rate

4.8%

Median earnings

$58,138

Median household income

$117,240

Median home value

$438,700

Median gross rent

$1,945

Education

  • High school graduate97.1%
  • Bachelor's degree51.6%
  • Graduate degree20.2%

Places covering 78665

Cities and places

Counties

38.2% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 78665

IRS populationACS population
69,21434,607020062023

Hover a year for IRS and ACS values.

ZIP codes near 78665

  1. 78664Round Rock2.7 miPop 62,272 · Income $85,919
  2. 78680Round Rock2.7 miPop 1,279 · Income —
  3. 78682Round Rock2.7 miPop 56 · Income —
  4. 78683Round Rock2.7 miPop 726 · Income —
  5. 78681Round Rock5.4 miPop 58,531 · Income $136,215
  6. 78634Hutto6.0 miPop 43,466 · Income $111,227
  7. 78728Austin6.9 miPop 26,776 · Income $74,048
  8. 78660Pflugerville7.0 miPop 118,437 · Income $109,522
  9. 78691Pflugerville7.0 miPop 1,330 · Income —
  10. 78626Georgetown7.3 miPop 45,020 · Income $94,967
  11. 78627Georgetown7.3 miPop 1,668 · Income —
  12. 78717Austin7.4 miPop 36,085 · Income $140,483

ZIP code 78665 FAQ

What city is ZIP code 78665 in?
78665 is in Round Rock, TX.
What county is 78665 in?
78665 is in Williamson County.
What is the median household income in 78665?
The median household income in 78665 is $117,240.
Which ZIP codes are near 78665?
Use the radius tool on this page to list ZIP codes within a chosen distance of 78665.