Baltimore County, Maryland

Baltimore County covers 598 square miles of land. Below is what the Isopleth API returned at the Census Bureau's interior point for the county (39.44317, -76.61657) on 2026-10-29. The ground sits at 111 m (364 ft) on a 9.4° slope, the mapped soil is well drained, it is outside a mapped FEMA floodplain, the nearest 69 kV+ substation is 1.7 km (1.1 mi) away and a major road is 879 m away. Values describe that one point, not the whole county; look up your own address or coordinates for your site.

Sample point values

Fields with no data at this point are left out. See the field catalog for all 351 fields.

Parcels

Parcel records: 2,293,824 parcels in 24 counties. Baltimore County has 302,821 of them. Published by Maryland Department of Planning; State Department of Assessments and Taxation (SDAT) (Public, attribution); SDAT assessments May 2026, refreshed quarterly.

Share of parcels with each column filled: site address 88%, total value 94%, land use 96%, sale date 91%, zoning 74%, year built 82%. Not published here: owner name.

The parcel under the sample point is 0.3 acres, land use “Residential”; its public record includes site address, mailing address, total value, land value, sale price, sale date, year built, legal description, land-use code. parcel_enrich returns that record for any parcel you ask about, and parcel_search finds parcels by acreage, land use or value.

Look up your own site

curl https://api.isopleth.dev/v1/fetch -H "Authorization: Bearer $ISOPLETH_KEY" \
  -H "Content-Type: application/json" \
  -d '{"lat": 39.443167, "lng": -76.616569, "preset": "site_selection"}'

Or ask your assistant through the MCP server: “Using Isopleth, check flood zone, wetlands, soils and distance to power for [your address in Baltimore County, Maryland].”

Buying land here? Check the Land’s Baltimore County page shows what its $29 report checks, built on these same Isopleth fields.

More in Maryland: Frederick County · Garrett County · Maryland overview · all states