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/OH/COUNTY/DELAWARE

Delaware County, OH ZIP codes

There are 10 ZIP codes in Delaware County, OH, in 10 towns, from 43015 to 43240. The largest are 43015 (Delaware), 43065 (Powell) and 43082 (Westerville).

The county seat is Delaware.

ZIP codes
10
Towns
10
County seat
Delaware
County FIPS
39041
State
Ohio
Population
226,834
Median household income
$133,540
Land area
443 sq mi
Area codes
220, 380, 614, 740
Metro area
Columbus

Delaware County ZIP codes by town

Delaware (county seat)
43015

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.

Map of Delaware County ZIP codes

43015430214303243035430614306543066430744308243240

The ZIP codes of Delaware 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.

Delaware County in numbers

About 226,834 people live in Delaware County, in 82,287 households, the 12th most populous of Ohio's 88 counties. The median household income is $133,540 a year, 87% above the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $445,500 (2.1 times the Ohio median), and median gross rent is $1,492 a month. The median age is 40.1; 59.4% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 25 minutes.

Population226,834Delaware226,834
Households82,287Delaware82,287
Median age40.1Delaware40.1Ohio39.7US 38.9
Median household income$133,540Delaware$133,540Ohio$71,389US $80,734
Median home value$445,500Delaware$445,500Ohio$214,800US $332,700
Median gross rent$1,492Delaware$1,492Ohio$1,034US $1,413
Bachelor's degree or higher59.4%Delaware59.4%Ohio31.5%US 35.7%
Mean commute25.4 minDelaware25.4 minOhio23.4 minUS 26.4 min
Population density512 / sq miDelaware512 / 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 Delaware County

Largest towns in Delaware County
TownZIP codesPopulation
Columbus 1 914,802
Delaware 1 44,589
Westerville 1 38,645
Lewis Center 1 36,012
Powell 1 14,451
Sunbury 1 8,005
Galena 1 1,709
Ostrander 1 1,008
Radnor 1 95
Kilbourne 1 43

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 Delaware County.

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

Every ZIP code in Delaware County, with figures

ZIP codes in Delaware County
ZIP City Type Population Median income Median home
43015 Delaware , OH Standard 61,401 $105,322 $342,700
43021 Galena , OH Standard 14,403 $167,941 $564,700
43032 Kilbourne , OH Standard 0 — —
43035 Lewis Center , OH Standard 36,012 $154,683 $456,400
43061 Ostrander , OH Standard 4,921 $157,568 $400,300
43065 Powell , OH Standard 46,679 $154,481 $482,200
43066 Radnor , OH Standard 1,368 $129,012 $389,400
43074 Sunbury , OH Standard 16,873 $119,296 $426,100
43082 Westerville , OH Standard 34,563 $147,972 $458,200
43240 Columbus , OH Standard 7,679 $82,895 $329,200

Cite this page

zipcodes.pro. “Delaware County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/oh/county/delaware

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