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/WA/KELLER

Keller ZIP code, Washington

The ZIP code for Keller, WA is 99140, and its area code is 509.

USPS city name
1 ZIP code
Population
212
Area code
509

NANPA lists no telephone rate centre for Keller itself, so these are the area codes of the nearest one, Coulee Dam (14.9 miles). A town on an area-code boundary can differ from its neighbour.

Keller in numbers

About 212 people live in Keller, in 98 households. The median household income is $57,500 a year, 41% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $108,000 (81% below the Washington median), and median gross rent is $338 a month. The median age is 39.3; 9.3% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 28 minutes.

Population212Keller212
Households98Keller98
Median age39.3Keller39.3Washington38.3US 38.9
Median household income$57,500Keller$57,500Washington$98,141US $80,734
Median home value$108,000Keller$108,000Washington$564,600US $332,700
Median gross rent$338Keller$338Washington$1,760US $1,413
Bachelor's degree or higher9.3%Keller9.3%Washington39.6%US 35.7%
Mean commute27.8 minKeller27.8 minWashington26.6 minUS 26.4 min
Population density22 / sq miKeller22 / sq mi

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

ZIP codes addressed as Keller

ZIP codes with the USPS city name Keller
ZIP City Type Population Median income Median home
99140 Keller , WA Standard 486 $53,529 $140,700

Map of Keller ZIP codes

99140

The ZIP codes of Keller, WA, 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 Keller

The nearest larger towns are Elmer City (332 people, 12 mi), Coulee Dam (1,595 people, 14 mi) and Nespelem Community (358 people, 16 mi).

More nearby: every ZIP code in Ferry County · Washington ZIP codes

Cite this page

zipcodes.pro. “Keller, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/keller

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