Delaware County GIS Maps
Delaware County, Ohio, has 214,124 residents and covers 443.2 square miles. The population grew 22.9% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Delaware County is 39041.
Delaware is the county's largest population center. Delaware County also includes 11 zip codes, 11 public school districts and 46 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Delaware County Trends
- Population
- 214,124▴
- Median Home Value
- $419,500▴
- K-12 Enrollment
- 74,653▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Delaware County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Delaware County Population
Delaware County had 214,124 residents in 2020. That was 22.9% higher than in 2010. Delaware County added 104,135 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 483 people per square mile. Some of the county's most populated postal areas include Delaware, Powell and Lewis Center.
Population Trend in Delaware County OH
Delaware County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Delaware County Zip Codes
Delaware County has 11 zip codes. Some of the county's most populated zip codes include Delaware (43015), Powell (43065) and Lewis Center (43035). Delaware is the largest zip by population, with about 57,563 residents or 27% of the county total. Together, the three largest zips account for about 63% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Delaware County OH
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 43015 | Delaware | 57,563 | ▴ 19.7% |
| 43065 | Powell | 44,829 | ▴ 15.5% |
| 43035 | Lewis Center | 33,032 | ▴ 33.6% |
| 43082 | Westerville | 32,459 | ▴ 8.4% |
| 43074 | Sunbury | 15,288 | ▴ 31.2% |
| Download all zip code data | |||
Delaware County Zip Code populations and trends per most recent census data.
Delaware County Demographics
Delaware County has a median age of 39.9, which is close to the Ohio average. About 25.3% of residents are under 18, while 14.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 32.6% of the population, which points to a solid working-age base. About 58% of adults have a bachelor's degree or higher, above the statewide figure of 30.9%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Delaware County OH
Median Age
39.9
Under 18
25.3%
Age 65+
14.7%
Bachelor's+
58%
Delaware County School Districts
Delaware County is served by 11 public school districts with 74,653 students enrolled in 2024. The largest districts on the county map are Olentangy Local, Dublin City and Westerville City. Those three districts account for about 75% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.
Largest School Districts by Enrollment in Delaware County OH
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Olentangy Local School District | 24,133 | 32.3% | ▴ 1.4% |
| Dublin City School District | 16,967 | 22.7% | ▴ 1.4% |
| Westerville City School District | 14,589 | 19.5% | ▴ 0.4% |
| Delaware City School District | 5,650 | 7.6% | ▴ 0% |
| Big Walnut Local School District | 4,298 | 5.8% | ▴ 0.4% |
| Download all school district data | |||
Delaware County school district enrollment and trends per most recent NCES reporting data.
Delaware County Housing & Real Estate
Delaware County has a median home value of $419,500 and a median gross rent of $1,433. About 78% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Ohio median, while rents come in above the state average. In March 2026, the median listing price was $552,225 and homes spent about 38 days on the market.
Delaware County Housing Mix
Delaware County housing mix: owner, renter and vacant units.
Delaware County Housing Trends
Delaware County median home value and rent trend (last 5 years).
Businesses in Delaware County, OH
Delaware County has 8,640 business listings across 835 categories. The largest categories in Delaware County business listings are Real Estate Agents (194, 2.2%), Churches & Religious Organizations (154, 1.8%), and Insurance Agencies (150, 1.7%). The full Delaware County business listings dataset includes names, categories, addresses and contact details where available. Delaware County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Delaware County, OH
| Category | Businesses | Share |
|---|---|---|
| Real Estate Agents | 194 | 2.2% |
| Churches & Religious Organizations | 154 | 1.8% |
| Insurance Agencies | 150 | 1.7% |
| Gyms & Fitness | 117 | 1.4% |
| Parks & Recreation | 116 | 1.3% |
| Professional Services | 105 | 1.2% |
| Medical Offices | 102 | 1.2% |
| Contractors | 98 | 1.1% |
| Hair Salons | 94 | 1.1% |
| Fast Food | 92 | 1.1% |
Delaware County Business Listings
| Business | Category | City |
|---|---|---|
| Maryhaven | Abuse And Addiction Treatment | Delaware |
| Residence Inn by Marriott Columbus Polaris | Accommodation | Columbus |
| DeNoewer Financial Services | Accountant | Delaware |
| Us Spirit | Active Life | Westerville |
| Lemay's Way Acupuncture | Acupuncture | Delaware |
| Ohio Addiction Recovery Center | Addiction Rehabilitation Center | Columbus |
| Cirilla's | Adult Entertainment | Columbus |
| Beds 'n' Stuff / Waterbeds 'n' Stuff Superstore | Adult Store | Lewis Center |
| TriAd Marketing & Media | Advertising Agency | Westerville |
| Juvly Aesthetics | Aesthetician | Columbus |
| Download Delaware County business listings | ||
Delaware County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Delaware County Basemaps
Delaware County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Delaware County Data Package
This page shows a preview of what's included in the Delaware County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Delaware County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.