Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/TX/WEIR

Weir ZIP code, Texas

The ZIP code for Weir, TX is 78674, and its area codes are 512 and 737.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
434
Area codes
512, 737
State
Texas

NANPA lists no telephone rate centre for Weir itself, so these are the area codes of the nearest one, Georgetown (1.4 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Weir uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Weir in numbers

About 434 people live in Weir, in 139 households. The median age is 37.8; 15.4% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 30 minutes.

Population434Weir434
Households139Weir139
Median age37.8Weir37.8Texas35.6US 38.9
Bachelor's degree or higher15.4%Weir15.4%Texas33.8%US 35.7%
Mean commute29.7 minWeir29.7 minTexas26.7 minUS 26.4 min
Population density238 / sq miWeir238 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Weir city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Weir

ZIP codes with the USPS city name Weir
ZIP City Type Population Median income Median home
78674 Weir , TX Standard 108 — $47,500

Other ZIP codes overlapping Weir

These ZIP codes cover part of Weir but are addressed as somewhere else.

ZIP codes overlapping Weir
ZIP City Type Population Median income Median home
78626 Georgetown , TX Standard 48,072 $100,431 $387,700

Map of Weir ZIP codes

78674

The ZIP codes of Weir, TX, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Weir

The nearest larger towns are Georgetown (85,999 people, 6.4 mi), Serenada (1,444 people, 6.6 mi) and Sonterra (10,563 people, 9.0 mi).

Towns near Weir
TownPopulationDistance
Georgetown 85,999 6.4 mi
Sonterra 10,563 9.0 mi
Jarrell 3,295 9.3 mi
Hutto 35,483 9.7 mi
Round Rock 127,786 11.3 mi
Taylor 17,136 12.0 mi
Santa Rita Ranch 6,586 14.3 mi
Brushy Creek 19,576 14.4 mi
Pflugerville 65,971 15.8 mi
Wells Branch 13,523 17.0 mi
Leander 74,067 17.6 mi
Cedar Park 78,301 17.8 mi
Liberty Hill 8,371 18.7 mi
Manor 18,603 22.4 mi

More nearby: every ZIP code in Williamson County · Texas ZIP codes

Cite this page

zipcodes.pro. “Weir, TX ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/tx/weir

Underlying data is public domain or openly licensed — sources, vintages and licences.