Texas Williamson County Demographics

Williamson County is one of a 252 primary legal divisions of Texas in the United States, accommodates 617,396 total local residents (according to 2022 ACS 5-year data), and associated with 2 NPA codes, 81 standard zip codes, 4 unique zip codes, and 6 major cities. This demographic dynamics of Williamson County, TX shows how its entire population of 617,396 residents connected to various socio-economic factors like education, employment, total households, household income, per capita income, etc.

San Diego County, CA Demographics Summary

Parameter	Value
County Name	Williamson County
Williamson County FIPS Code	48491
State	Texas
Population	617,396 residents
Male Population	307,076 males
Female Population	310,320 females
Male to Female Ratio	990 female per 1,000 male
Land Area	1,116 square miles
Population per square mile	553 residents
White Population	417,463
Hispanic or Latino Population	154,605
Black Population	41,744
Asian Population	50,370
Total US Natives or Citizens	617,396
Total Non US Citizens	46,631
Education	50.30
Employment	68.90
Avg. household income	$126,077
Percapita Income	$47,574
Total Housing units	617,396
Vacant Housing units	10,176
Insurance	614,086

Williamson County, TX and USA Comparison

	Williamson County	Texas	United States
Total population	617,396	29,145,505	331,097,593
Population per square miles	553	112	94
Employment Rate	68.07%	62.10%	60.30%
Median Household Income	$126,077	$72,284	$74,755
Health Insurance Coverage	91.4%	83.4%	92%
Total Housing Units	229,906	11,087,708	129,870,928

Popular Cities in Williamson County, TX

Williamson County is the 12th most populous county in Texas, a place for having 6 most populous cities (having the population of more than 20000 residents) in the United States.

City	Population	Zip Codes
Austin	958,202	61 zip codes
Cedar Park	76,344	2 zip codes
George city	71,788	4 zip codes
Hutto	29,498	1 zip code
Leander	62,491	2 zip codes
Round Rock	120,465	6 zip codes

2 Area Codes Used in Williamson County, TX

Williamson County is a 158th largest populous county in the United States and a 12th Texas, is associated with 2 area (NPA) codes in the United States for dialing/telecommunication purposes.

• 512 Area Code
• 737 Area Code

4 Unique and 81 Standard ZIP Codes Used in Williamson County

Williamson county is a place for 4 unique and 81 standard ZIP code locations for mail and parcel delivery purposes.

81 STANDARD ZIP Codes in Williamson County
There are 81 STANDARD ZIP codes are being used in Williamson County, TX to handle home and business mail delivery. Unlike the 4 Unique ZIP codes in Williamson County, the Standard ZIP codes handle the mail delivery for the nearby Unique ZIP code locations too.

ZIP Code	Post Office Location	Post Office	Population
76527	FLORENCE 308 N PATTERSON AVE	Standard	4141
76530	BARTLETT 131 N EVIE ST	Post-Box Only using 76511 Facility	2424
76537	JARRELL 12355 N INTERSTATE 35	Standard	11501
76573	SCHWERTNER 14775 FM 1105	Standard	27
76574	TAYLOR 202 W 4TH ST	Standard	19629
76578	THRALL 101 E SHELDON AVE	Standard	1232
78613	CEDAR PARK 500 E WHITESTONE BLVD	Standard	88189
78615	COUPLAND 13701 S STATE HIGHWAY 95	Standard	1781
78626	GEORGETOWN 2300 SCENIC DR	Standard	40758
78627	GEORGETOWN 2300 SCENIC DR	Post-Box Only using 78626 Facility	-
78628	GEORGETOWN 2300 SCENIC DR	Post-Box Only using 78626 Facility	41428
78630	CEDAR PARK 500 E WHITESTONE BLVD	Post-Box Only using 78613 Facility	-
78633	GEORGETOWN 2300 SCENIC DR	Post-Box Only using 78626 Facility	27292
78634	HUTTO 388 EXCHANGE BLVD	Standard	41099
78641	LEANDER 801 S HIGHWAY 183	Standard	87106
78642	LIBERTY HILL 2655 RANCH ROAD 1869	Standard	20699
78646	LEANDER 801 S HIGHWAY 183	Post-Box Only using 78641 Facility	-
78664	ROUND ROCK 2250 DOUBLE CREEK DR	Standard	62168
78665	ROUND ROCK 2250 DOUBLE CREEK DR	Post-Box Only using 78664 Facility	61640
78674	WEIR 200 FM 1105	Standard	233
78680	ROUND ROCK WEST 797 SAM BASS RD	Post-Box Only using 78681 Facility	-
78681	ROUND ROCK WEST 797 SAM BASS RD	Standard	57760
78683	ROUND ROCK 2250 DOUBLE CREEK DR	Post-Box Only using 78664 Facility	-
78701	SOUTHEAST AUSTIN 4516 BURLESON RD	Post-Box Only using 78744 Facility	10659
78702	SOUTHEAST AUSTIN 4516 BURLESON RD	Post-Box Only using 78744 Facility	25723
78703	CENTRAL PARK 3507 N LAMAR BLVD	Post-Box Only using 78705 Facility	22669
78704	SOUTH CONGRESS 3903 S CONGRESS AVE	Standard	50250
78705	NORTHCROSS 7700 NORTHCROSS DR	Post-Box Only using 78757 Facility	32644
78708	BLUEBONNET 1822 W BRAKER LN	Post-Box Only using 78758 Facility	-
78709	OAK HILL 6104 OLD FREDERICKSBURG RD	Post-Box Only using 78749 Facility	-
78711	CAPITOL 111 E 17TH ST	Post-Box Only using 78701 Facility	-
78713	UNIVERSITY AUSTIN 306 INNER CAMPUS DR	Post-Box Only using 78712 Facility	-
78714	GMF AUSTIN 8225 CROSS PARK DR	Post-Box Only using 78710 Facility	-
78715	MOCKINGBIRD 7310 MENCHACA RD	Post-Box Only using 78745 Facility	-
78716	WESTLAKE 3201 BEE CAVES RD STE 120	Post-Box Only using 78746 Facility	-
78717	MCNEIL 10109 LAKE CREEK PKWY	Post-Box Only using 78729 Facility	34499
78718	TOWN NORTH 8557 RESEARCH BLVD STE 124	Post-Box Only using 78758 Facility	-
78719	SOUTHEAST AUSTIN 4516 BURLESON RD	Post-Box Only using 78744 Facility	1511
78720	BALCONES 11900 JOLLYVILLE RD	Post-Box Only using 78759 Facility	-
78721	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	10445
78722	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	6308
78723	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	37000
78724	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	28331
78725	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	9896
78726	BALCONES 11900 JOLLYVILLE RD	Post-Box Only using 78759 Facility	13696
78727	BLUEBONNET 1822 W BRAKER LN	Post-Box Only using 78758 Facility	30601
78728	BLUEBONNET 1822 W BRAKER LN	Post-Box Only using 78758 Facility	27111
78729	MCNEIL 10109 LAKE CREEK PKWY	Standard	31309
78730	CHIMNEY CORNERS 3575 FAR WEST BLVD	Post-Box Only using 78731 Facility	9746
78731	CHIMNEY CORNERS 3575 FAR WEST BLVD	Standard	26314
78735	OAK HILL 6104 OLD FREDERICKSBURG RD	Post-Box Only using 78749 Facility	19793
78736	OAK HILL 6104 OLD FREDERICKSBURG RD	Post-Box Only using 78749 Facility	9352
78737	OAK HILL 6104 OLD FREDERICKSBURG RD	Post-Box Only using 78749 Facility	24951
78739	OAK HILL 6104 OLD FREDERICKSBURG RD	Post-Box Only using 78749 Facility	19907
78741	SOUTHEAST AUSTIN 4516 BURLESON RD	Post-Box Only using 78744 Facility	45780
78742	SOUTHEAST AUSTIN 4516 BURLESON RD	Post-Box Only using 78744 Facility	1241
78744	SOUTHEAST AUSTIN 4516 BURLESON RD	Standard	49452
78745	MOCKINGBIRD 7310 MENCHACA RD	Standard	61322
78746	SOUTH CONGRESS 3903 S CONGRESS AVE	Post-Box Only using 78704 Facility	28329
78747	MOCKINGBIRD 7310 MENCHACA RD	Post-Box Only using 78745 Facility	21253
78748	MOCKINGBIRD 7310 MENCHACA RD	Post-Box Only using 78745 Facility	53550
78749	OAK HILL 6104 OLD FREDERICKSBURG RD	Standard	34714
78750	BALCONES 11900 JOLLYVILLE RD	Post-Box Only using 78759 Facility	28564
78751	CENTRAL PARK 3507 N LAMAR BLVD	Post-Box Only using 78705 Facility	16326
78752	NORTHEAST AUSTIN 900 BLACKSON AVE	Standard	22599
78753	BLUEBONNET 1822 W BRAKER LN	Post-Box Only using 78758 Facility	59951
78754	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	31110
78755	CHIMNEY CORNERS 3575 FAR WEST BLVD	Post-Box Only using 78731 Facility	-
78756	NORTHCROSS 7700 NORTHCROSS DR	Post-Box Only using 78757 Facility	9816
78757	NORTHCROSS 7700 NORTHCROSS DR	Standard	25183
78758	BLUEBONNET 1822 W BRAKER LN	Standard	51185
78759	BALCONES 11900 JOLLYVILLE RD	Standard	45400
78760	SOUTHEAST AUSTIN 4516 BURLESON RD	Post-Box Only using 78744 Facility	-
78761	NORTHEAST AUSTIN 900 BLACKSON AVE	Post-Box Only using 78752 Facility	-
78762	EAST AUSTIN 1914 E 6TH ST	Post-Box Only using 78702 Facility	-
78763	WEST AUSTIN 2418 SPRING LN	Post-Box Only using 78703 Facility	-
78764	SOUTH CONGRESS 3903 S CONGRESS AVE	Post-Box Only using 78704 Facility	-
78765	NORTHCROSS 7700 NORTHCROSS DR	Post-Box Only using 78757 Facility	-
78766	NORTHCROSS 7700 NORTHCROSS DR	Post-Box Only using 78757 Facility	-
78767	DOWNTOWN AUSTIN 823 CONGRESS AVE STE 150	Post-Box Only using 78701 Facility	-
78768	DOWNTOWN AUSTIN 823 CONGRESS AVE STE 150	Post-Box Only using 78701 Facility	-

4 UNIQUE ZIP Codes in Williamson County
Williamson County's UNIQUE ZIP codes in Texas are the exclusive ZIP codes assigned to governmental agencies, universities and large businesses in the county, handling large volume of mail delivery. Despite the nearby STANDARD ZIP codes include these entity regions in Texas, these 4 Unique ZIP codes in Williamson County, TX ensures the faster delivery to such locations. These 4 ZIP code are not recommended to use if your mail is not intended to recipients or entities in these 4 Unique ZIP code locations in Williamson County, TX.

Entity ZIP Code	Post Office Location	Physical ZIP Code
78682	ROUND ROCK 2250 DOUBLE CREEK DR	78664
78773	NORTHCROSS 7700 NORTHCROSS DR	78757
78779	CENTRAL PARK 3507 N LAMAR BLVD	78705
78783	SOUTH CONGRESS 3903 S CONGRESS AVE	78704