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Where am ILOCATED

Delaware County, Ohio

Delaware County, Ohio, has 242,032 residents (July 2025 estimate). Its county seat is Delaware. It uses Eastern Time and covers 443 sq mi (1,148 km²) of land.

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Delaware County in Ohio
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Delaware County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
242,032
Land area
443 sq mi (1,148 km²)
County seat or government
Delaware
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$133,540 ± $2,345
Median home value
$445,500 ± $4,990
Median rent, with utilities
$1,492 ± $47
Homes lived in by their owners
78.5% ± 1.2 points
County type
County
Metro or micro area
Columbus, OH metro areaCentral county
Water area
14.2 sq mi (36.7 km²)
State
Ohio
County code (FIPS)
39041
Coordinates (central point)
40.278941, -83.007462
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Delaware County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 4308165,020 people
  2. 4301561,401 people
  3. 4306546,679 people
  4. 4301646,362 people
  5. 4323544,589 people
  6. 4301741,613 people
  7. 4304038,990 people
  8. 4303536,012 people
  9. 4308234,563 people
  10. 4305427,594 people
  11. 4307416,873 people
  12. 4302114,403 people
All 24
  1. 4303113,876 people
  2. 432407,679 people
  3. 430116,594 people
  4. 433346,326 people
  5. 433446,173 people
  6. 430614,921 people
  7. 433423,836 people
  8. 430033,723 people
  9. 430131,754 people
  10. 430661,368 people
  11. 433561,120 people
  12. 430320 people

24 ZIP Code areas overlap Delaware County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Delaware County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Delaware County, largest first

  1. Delaware City Township40,871 people
  2. Orange Township39,987 people
  3. Liberty Township33,773 people
  4. Genoa Township26,510 people
  5. Concord Township11,930 people
  6. Berlin Township9,975 people
  7. Westerville City Township9,215 people
  8. Sunbury Village Township7,992 people
  9. Columbus City Township7,960 people
  10. Berkshire Township5,745 people
  11. Harlem Township4,879 people
  12. Washington Township4,322 people
All 23
  1. Scioto Township3,979 people
  2. Delaware Township2,774 people
  3. Kingston Township2,578 people
  4. Porter Township2,474 people
  5. Troy Township2,463 people
  6. Trenton Township2,449 people
  7. Radnor Township1,629 people
  8. Oxford Township951 people
  9. Brown Township889 people
  10. Thompson Township568 people
  11. Marlboro Township382 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Ohio, by county

School districts in Delaware County, largest first

  1. Olentangy Local School District107,015 people
  2. Westerville City School District104,173 people
  3. Dublin City School District94,939 people
  4. Delaware City School District42,472 people
  5. Big Walnut Local School District25,745 people
  6. Buckeye Valley Local School District19,252 people
  7. Johnstown-Monroe Local School District10,469 people
  8. Northridge Local School District (Licking County)9,899 people
  9. Highland Local School District (Morrow County)9,768 people
  10. North Union Local School District8,881 people
  11. Elgin Local School District7,033 people
  12. Centerburg Local School District6,465 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Columbus, Ohio (city)914,802 people
  2. Dublin, Ohio (city)49,294 people
  3. Delaware, Ohio (city)44,589 people
  4. Westerville, Ohio (city)38,645 people
  5. Powell, Ohio (city)14,451 people
  6. Sunbury, Ohio (city)8,005 people
  7. Galena, Ohio (village)1,709 people
  8. Ashley, Ohio (village)1,593 people
  9. Ostrander, Ohio (village)1,008 people
  10. Shawnee Hills, Ohio (village)946 people
  11. Radnor, Ohio (CDP)95 people
  12. Kilbourne, Ohio (CDP)43 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Union County, Ohio19 mi west
  2. Morrow County, Ohio20 mi northeast
  3. Franklin County, Ohio21 mi south
  4. Marion County, Ohio23 mi north
  5. Licking County, Ohio31 mi southeast
  6. Knox County, Ohio32 mi east

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.