County · code 42095
Northampton CountyPennsylvania
Northampton County is a county in Pennsylvania, with its seat in Easton. It was formed on March 11, 1752, from Bucks County and named after Northamptonshire.
- Founded1752
- County seatEaston
- Named forNorthamptonshire, England
- Land area370 sq mi + 7.4 sq mi water
- Population312,951 2020 Census
- Parcels mapped123,362 checked 15 October 2026
Where it is
Northampton on the map of Pennsylvania
Pennsylvania has 67 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1752 from Bucks County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Northampton was created on March 11, 1752, from Bucks County and Non-County Area 1. Connecticut asserted a charter claim to northeastern Pennsylvania, and Northampton was overlapped by Litchfield County (Connecticut) in 1774, then by Westmoreland County (Connecticut) in 1776, until Congress ruled in favor of Pennsylvania's claim in 1782. Over the following decades, Northampton lost territory to the creation of Northumberland County (1772), Wayne County (1798), Schuylkill County (1811), Lehigh County (1812), Monroe County (1836), and Carbon County (1843).
- 1752Northampton County created Northampton created from Bucks and Non-County Area 1. · Pa. Stat., ch. 393, sec. 1/5:141
- 1772Lost territory Northampton lost to the creation of Northumberland. · Pa. Stat., ch. 644, sec. 1/8:143-144
- 1798Lost territory Northampton lost to the creation of Wayne. · Pa. Stat., ch. 1986, sec. 1/16:64
- 1811Lost territory Northampton lost to the creation of Schuylkill. · Pa. Laws 1810-1811, ch. 54, sec. 1/p. 61
- 1812Lost territory Northampton lost to the creation of Lehigh. · Pa. Laws 1811-1812, ch. 49, sec. 1/p. 76
Show all 11 changes
- 1752Northampton County created Northampton created from Bucks and Non-County Area 1. · Pa. Stat., ch. 393, sec. 1/5:141
- 1772Lost territory Northampton lost to the creation of Northumberland. · Pa. Stat., ch. 644, sec. 1/8:143-144
- 1774Changed Northampton overlapped by Litchfield (Connecticut) when Connecticut asserted its charter claim to northeastern Pennsylvania. · Cappon, Petchenik, and Long, 17, 92; Conn. Col. Recs., 13:427, 14:218
- 1776Changed Northampton overlapped by Westmoreland (Connecticut), which replaced Litchfield (Connecticut).Westmoreland (Conn.)Litchfield (Conn.)· Cappon, Petchenik, and Long, 17, 92; Conn. St. Recs., 1:7
- 1782Changed Northampton's overlap by Westmoreland (Connecticut) ended when Congress ruled in favor of Pennsylvania's claim to area.Westmoreland (Conn.)· Susquehannah Co. Papers, 7:xxxiii, 245
- 1795Boundary clarified Boundary between Northampton and Luzerne clarified (no change).with Luzerneno change· Pa. Stat., ch. 1848, sec. 1/15:312
- 1798Lost territory Northampton lost to the creation of Wayne. · Pa. Stat., ch. 1986, sec. 1/16:64
- 1811Lost territory Northampton lost to the creation of Schuylkill. · Pa. Laws 1810-1811, ch. 54, sec. 1/p. 61
- 1812Lost territory Northampton lost to the creation of Lehigh. · Pa. Laws 1811-1812, ch. 49, sec. 1/p. 76
- 1836Lost territory Northampton lost to the creation of Monroe. · Pa. Laws 1835-1836, no. 144, secs. 1-2/p. 430
- 1843Lost territory Northampton lost to the creation of Carbon. · Pa. Laws 1843, no. 41, secs. 1-2/p. 85
Land and parcels
What the maps cover in Northampton
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 123,362 parcels from Northampton County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026 -
Address points Missing
No public address points layer found for Northampton County yet.
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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
Northampton 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
Northampton 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 Northampton County.
See your own lot on these maps
Open Northampton 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 Northampton County
- When was Northampton County founded?
- Northampton County was founded in 1752, formed from Bucks County, and named after Northamptonshire, England.
- What is the county seat of Northampton County?
- The county seat of Northampton County is Easton.
- Is there an online parcel map for Northampton County?
- Yes. Northampton County publishes a parcel map of 123,362 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Northampton County's boundary or name changed?
- Northampton County was created in 1752 from Bucks County. Since then the Atlas of Historical County Boundaries records 9 later changes, chiefly involving Litchfield (Conn.) County, Westmoreland (Conn.) County and Carbon County.
- Is my lot in a flood zone?
- We do not have flood maps for Northampton County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby