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/PA/FAIRFIELD

Fairfield ZIP code, Pennsylvania

The ZIP code for Fairfield, PA is 17320, and its area codes are 717 and 223.

USPS city name
1 ZIP code
Population
569
Area codes
717, 223

Fairfield in numbers

About 569 people live in Fairfield, in 259 households. The median household income is $55,774 a year, 28% below the Pennsylvania median of $77,971 (US: $80,734). The median owner-occupied home is valued at $238,200 (6% below the Pennsylvania median), and median gross rent is $1,018 a month. The median age is 48.4; 20.3% of adults 25 and over hold a bachelor's degree or higher (35.2% across Pennsylvania); the average commute takes 32 minutes.

Population569Fairfield569
Households259Fairfield259
Median age48.4Fairfield48.4Pennsylvania40.9US 38.9
Median household income$55,774Fairfield$55,774Pennsylvania$77,971US $80,734
Median home value$238,200Fairfield$238,200Pennsylvania$254,500US $332,700
Median gross rent$1,018Fairfield$1,018Pennsylvania$1,209US $1,413
Bachelor's degree or higher20.3%Fairfield20.3%Pennsylvania35.2%US 35.7%
Mean commute31.6 minFairfield31.6 minPennsylvania26.3 minUS 26.4 min
Population density845 / sq miFairfield845 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Fairfield borough. 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
17320 Fairfield , PA Standard 8,124 $90,076 $295,000

Map of Fairfield ZIP codes

17320

The ZIP codes of Fairfield, PA, 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 Carroll Valley (3,992 people, 2.8 mi), McKnightstown (695 people, 6.2 mi) and Emmitsburg, MD (2,845 people, 6.3 mi).

Towns near Fairfield
TownPopulationDistance
Carroll Valley 3,992 2.8 mi
Emmitsburg, MD 2,845 6.3 mi
Gettysburg 8,254 7.8 mi
Wayne Heights 3,293 9.7 mi
Lake Heritage 2,997 9.9 mi
Waynesboro 11,047 11.6 mi
Thurmont, MD 6,254 11.9 mi
Fayetteville 2,593 13.4 mi
Taneytown, MD 7,932 14.0 mi
Smithsburg, MD 3,115 14.5 mi
Guilford 3,919 15.1 mi
Littlestown 4,850 15.4 mi
Chambersburg 22,319 18.1 mi
McSherrystown 3,114 18.6 mi

More nearby: every ZIP code in Adams County · Pennsylvania ZIP codes

Cite this page

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

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