78664 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Williamson County
Centroid: Latitude 30.512, Longitude -97.67
Time Zone: Central Time Zone (UTC -6 hours)
Observes DST: Yes

ZIP Code 78664 has segments in 2 Counties (Travis, Williamson).

Businesses Addresses: 1,847
PO Box Addresses: 0
Residential Addresses: 23,575

Multi-Family Addresses: 6,755
Single Family Addresses: 16,820

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2024, Maps updated: May 1, 2024.

Round Rock, TX 78664 Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	62,306 (100%)
Population in Households	61,990 (99.5%)
Population in Families	50,012 (80.3%)
Population in Group Quarters¹	316 ( 0.5%)
Population Density	3,800
Diversity Index²	85


INCOME
Median Household Income	$88,971
Average Household Income	$115,865
% of Income for Mortgage⁴	29%
Per Capita Income	$42,260
Wealth Index⁵	87
Socioeconomic Status Index⁶	Moderate (50.3)

HOUSING
Total HU (Housing Units)	23,954 (100%)
Owner Occupied HU	12,110 (50.6%)
Renter Occupied HU	10,611 (44.3%)
Vacant Housing Units	1,233 ( 5.1%)
Median Home Value	$417,978
Average Home Value	$493,452
Housing Affordability Index³	75

HOUSEHOLDS
Total Households	22,721
Average Household Size	2.73
Family Households	15,080
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Round Rock, TX 78664 - Peer Comparisons by Rank and Percentile

The table below compares 78664 to the other 1,840 ZIP Codes in Texas by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	0.67%	0.56%
Households	0.89%	0.67%
Families		0.39%
Median Household Income		2.25%
Per Capita Income		2.61%
Owner Occupied HU		1.16%

Variable Description	Rank	Percentile
Total Population	# 71	96th
Population Density	# 229	88th
Median Household Income	# 382	79th
Housing Affordability Index	# 384	21st
Per Capita Income	# 482	74th
Diversity Index	# 159	91st

78664 ZIP Code Profile, Map, Data & Demographics

ZIP Code 78664: Basic Data & USPS Preferred City Name

Round Rock, TX 78664 Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Round Rock, TX 78664 - Peer Comparisons by Rank and Percentile

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Williamson County