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All Delaware counties

New Castle County, DE parcel API

LiveChecked July 23, 2026FIPS 10003

ParcelOps queries this county directly and gets parcel records back. It answers with 10 named fields and does not publish 10. Both lists are below.

Who publishes it

Routed toDelaware Department of Transportation / county assessors
Published byDelaware Department of Transportation and New Castle County; Delaware parcel data steward; catalogued by NSGIC
Records in layer649,061 across the 3 counties this route covers

What the route answers

2 verified routes serve this county. You reach them through the ParcelOps endpoint, so there is no county service to sign up for and no schema to learn per county.

  • Find the parcel under a set of coordinates
  • Pull every parcel inside a map area
  • Look a parcel up by its parcel number
  • Search by owner name
  • Search by property address

Fields this county returns

  • parcel number
  • alternate parcel number
  • owner name
  • property address
  • owner mailing address
  • city
  • ZIP code
  • county name
  • land use code
  • parcel area

What you will not get here

  • This county is served through a layer that also covers 2 other counties. The fields are that layer's shared set, not the county's full assessment record.
  • Not published on this route: legal description, market value, assessed value, land value, improvement value, sale price, sale date, sale year, year built, record update date.
  • Boundaries here are for research, not a survey. There is no title record, no ownership history and no valuation opinion on this route. Confirm tax and title facts with Delaware Department of Transportation / county assessors.

Nearby and related

Run a real New Castle County address before you pay for anything.

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