Clayton is a town in Kent County, Delaware, home to about 4,222 people across 1.9 square miles. Its ZIP code is 19938.
Homes sold for a median of $196 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Clayton. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Clayton’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Philadelphia International Airport (PHL)49 miles away |
|---|---|
| Closer regional airport | Dover Civil Air Terminal/Dover Air Force Base (DOV)15 miles away |
| Nearest city of 250,000+ | Baltimore, MD49 miles away |
| Nearest city of 1 million+ | Philadelphia, PA60 miles away |
Straight-line distances from the center of Clayton; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Clayton had 3,961 residents in the 2020 census, up 211% since 2000.
It’s the 22nd largest of 79 towns in Delaware by population.
Kent County grew from 32,762 residents in 1900 to 181,851 in 2020.
Kent County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 28°F. About 47.7 inches of rain and melted snow fall in a typical year, with about 13 inches of snow.
Source: NOAA 1991–2020 climate normals, Dover, DE weather station (12 miles away).
61,078 jobs at 4,971 businesses in Kent County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
22 doctors and other health care providers list an office in Clayton.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 5 |
| Mental health providers | 15 |
| Physical and occupational therapists | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Public schools here are run by Smyrna School District, Providence Creek Academy Charter School, First State Military Academy. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Clayton Elementary SchoolClayton | K–4 | 487 | Public | 3.6 mi |
| Providence Creek Academy Charter SchoolClayton | K–8 | 769 | Charter | 3.5 mi |
| Clayton Intermediate SchoolClayton | 5–6 | 490 | Public | 2.6 mi |
| First State Military AcademyClayton | 9–12 | 433 | Charter | 3.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Kenton Mennonite SchoolClayton | 1–10 | 31 | Mennonite | 1.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Kenton.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.