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/FAIRFIELD

Fairfield ZIP code, Texas

The ZIP code for Fairfield, TX is 75840, and its area codes are 903 and 430.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
2,924
Area codes
903, 430
State
Texas

Mail addressed to Fairfield 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.

Fairfield in numbers

About 2,924 people live in Fairfield, in 1,073 households. The median household income is $47,250 a year, 40% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $169,500 (40% below the Texas median), and median gross rent is $994 a month. The median age is 42.6; 20.2% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 22 minutes.

Population2,924Fairfield2,924
Households1,073Fairfield1,073
Median age42.6Fairfield42.6Texas35.6US 38.9
Median household income$47,250Fairfield$47,250Texas$78,476US $80,734
Median home value$169,500Fairfield$169,500Texas$283,800US $332,700
Median gross rent$994Fairfield$994Texas$1,403US $1,413
Bachelor's degree or higher20.2%Fairfield20.2%Texas33.8%US 35.7%
Mean commute21.6 minFairfield21.6 minTexas26.7 minUS 26.4 min
Population density536 / sq miFairfield536 / sq mi

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

ZIP codes addressed as Fairfield

ZIP codes with the USPS city name Fairfield
ZIP City Type Population Median income Median home
75840 Fairfield , TX Standard 6,994 $58,224 $206,200

Other ZIP codes overlapping Fairfield

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

ZIP codes overlapping Fairfield
ZIP City Type Population Median income Median home
75860 Teague , TX Standard 6,624 $59,950 $128,400

Map of Fairfield ZIP codes

75840

The ZIP codes of Fairfield, 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 Fairfield

The nearest larger towns are Teague (3,476 people, 8.9 mi), Mexia (6,859 people, 19 mi) and Groesbeck (3,914 people, 25 mi).

Towns near Fairfield
TownPopulationDistance
Teague 3,476 8.9 mi
Mexia 6,859 18.6 mi
Groesbeck 3,914 24.9 mi

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

Cite this page

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

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