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/SMITHVILLE

Smithville ZIP code, Texas

The ZIP code for Smithville, TX is 78957, and its area codes are 512 and 737.

USPS city name
1 ZIP code
Population
4,216
Area codes
512, 737
State
Texas

Smithville in numbers

About 4,216 people live in Smithville, in 1,776 households. The median household income is $59,977 a year, 24% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $254,400 (10% below the Texas median), and median gross rent is $1,230 a month. The median age is 43.1; 20.7% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 29 minutes.

Population4,216Smithville4,216
Households1,776Smithville1,776
Median age43.1Smithville43.1Texas35.6US 38.9
Median household income$59,977Smithville$59,977Texas$78,476US $80,734
Median home value$254,400Smithville$254,400Texas$283,800US $332,700
Median gross rent$1,230Smithville$1,230Texas$1,403US $1,413
Bachelor's degree or higher20.7%Smithville20.7%Texas33.8%US 35.7%
Mean commute28.5 minSmithville28.5 minTexas26.7 minUS 26.4 min
Population density1,019 / sq miSmithville1,019 / sq mi

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

ZIP codes addressed as Smithville

ZIP codes with the USPS city name Smithville
ZIP City Type Population Median income Median home
78957 Smithville , TX Standard 10,543 $69,149 $259,900

Map of Smithville ZIP codes

78957

The ZIP codes of Smithville, 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 Smithville

The nearest larger towns are Bastrop (11,156 people, 12 mi), Camp Swift (8,239 people, 15 mi) and La Grange (4,452 people, 18 mi).

Towns near Smithville
TownPopulationDistance
Circle D-KC Estates 3,135 11.7 mi
Bastrop 11,156 12.2 mi
Camp Swift 8,239 15.0 mi
La Grange 4,452 17.8 mi
Giddings 5,151 18.0 mi
Wyldwood 4,934 21.2 mi
Cedar Creek 4,440 22.1 mi
Schulenburg 2,768 26.9 mi
Elgin 11,563 27.8 mi

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

Cite this page

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

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