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 — STATE/GA/COUNTY/COOK

Cook County, GA ZIP codes

Cook County, GA has 4 ZIP codes, in 4 towns: 31620, 31647, 31637 and 31627. 1 more crosses into it from a neighbouring county: 31632.

The county seat is Adel.

ZIP codes
4
Partly in it
1 more
Towns
4
County seat
Adel
County FIPS
13075
State
Georgia
Population
17,532
Median household income
$53,651
Land area
228 sq mi

Cook County ZIP codes by town

Adel (county seat)
31620

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Cook County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Cook County.

Map of Cook County ZIP codes

31620316273163731647

The ZIP codes of Cook County, 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.

Cook County in numbers

About 17,532 people live in Cook County, in 6,304 households, the 101st most populous of Georgia's 159 counties. The median household income is $53,651 a year, 31% below the Georgia median of $77,353 (US: $80,734). The median owner-occupied home is valued at $157,500 (48% below the Georgia median), and median gross rent is $956 a month. The median age is 37.5; 17.9% of adults 25 and over hold a bachelor's degree or higher (34.9% across Georgia); the average commute takes 26 minutes.

Population17,532Cook17,532
Households6,304Cook6,304
Median age37.5Cook37.5Georgia37.6US 38.9
Median household income$53,651Cook$53,651Georgia$77,353US $80,734
Median home value$157,500Cook$157,500Georgia$303,300US $332,700
Median gross rent$956Cook$956Georgia$1,393US $1,413
Bachelor's degree or higher17.9%Cook17.9%Georgia34.9%US 35.7%
Mean commute25.6 minCook25.6 minGeorgia28.3 minUS 26.4 min
Population density77 / sq miCook77 / sq mi

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

Largest towns in Cook County

Largest towns in Cook County
TownZIP codesPopulation
Adel 1 5,641
Sparks 1 2,056
Lenox 1 713
Cecil 1 486

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Cook County.

Not sure you are in Cook County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Cook County, with figures

ZIP codes in Cook County
ZIP City Type Population Median income Median home
31620 Adel , GA Standard 10,969 $51,597 $160,500
31627 Cecil , GA Standard 287 $29,500 $74,300
31637 Lenox , GA Standard 3,217 $65,391 $134,500
31647 Sparks , GA Standard 3,071 $52,396 $147,500

Cite this page

zipcodes.pro. “Cook County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ga/county/cook

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