County · code 37081
Guilford CountyNorth Carolina
Guilford County is in North Carolina, with its county seats in Greensboro and Martinsville. It was formed in 1771 and is named after Francis North, 1st Earl of Guilford.
- Founded1771
- County seatGreensboro and Martinsville
- Named forFrancis North, 1st Earl of Guilford
- Land area646 sq mi + 12 sq mi water
- Population541,299 2020 Census
- Parcels mapped222,120 checked 15 October 2026
Where it is
Guilford on the map of North Carolina
North Carolina has 100 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1771 from Orange County and Rowan County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Guilford County was created on January 26, 1771, from Orange and Rowan counties. The county lost territory on February 12, 1779, with the creation of Randolph County, and again on December 29, 1785, with the creation of Rockingham County.
- 1771Guilford County created Guilford created from Orange and Rowan. · N.C. Recs., ch. 24, secs. 1-2/23:823-826
- 1779Lost territory Guilford lost to creation of Randolph. · N.C. Recs., ch. 22, secs. 1-2/24:234-236
- 1785Lost territory Guilford lost to creation of Rockingham. · N.C. Recs., ch. 23, secs. 1-2/24:745-746
Land and parcels
What the maps cover in Guilford
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 222,120 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 5 May 2026 · checked 15 October 2026 -
Address points Official
One point per address, 299,896 in all from NC Center for Geographic Information and Analysis (CGIA, NC Dept of Information Technology) for NC OneMap, with the North Carolina 911 Board (AddressNC program).
checked 14 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Guilford by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Guilford County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Guilford County.
See your own lot on these maps
Open Guilford County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Guilford County
- When was Guilford County founded?
- Guilford County was founded in 1771, formed from Orange County and Rowan County, and named after Francis North, 1st Earl of Guilford.
- What is the county seat of Guilford County?
- The county seat of Guilford County is Greensboro and Martinsville.
- Is there an online parcel map for Guilford County?
- Yes. A public source publishes a parcel map of 222,120 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Guilford County's boundary or name changed?
- Guilford County was created in 1771 from Orange County and Rowan County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Randolph County and Rockingham County.
- Is my lot in a flood zone?
- We do not have flood maps for Guilford County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby