Property research by county

Delaware county reference

3 counties and county equivalents in Delaware. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

Kent County
Delaware · FIPS 10001
194,786 residents · 2025 estimate
New Castle County
Delaware · FIPS 10003
588,026 residents · 2025 estimate
Sussex County
Delaware · FIPS 10005
277,140 residents · 2025 estimate

Use the county data

Use the county name and FIPS code to identify the correct jurisdiction before collecting parcel, assessor, recorder or court information. Compare this national reference with the separate property-data coverage directory.

National geographic coverage does not mean that parcel records or probate feeds are connected for every county.

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Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.