When was Hunterdon County founded?

Hunterdon County was founded in 1714, and named after Robert Hunter.

What is the county seat of Hunterdon County?

The county seat of Hunterdon County is Flemington.

Is there an online parcel map for Hunterdon County?

Yes. A public source publishes a parcel map of 54,763 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Hunterdon County's boundary or name changed?

Hunterdon County was created in 1714. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Mercer County, Somerset County and Morris County.

Who issues building permits in Hunterdon County?

The county's page on building permits: Permit Applications & Forms. Inside a city or town, ask that city first.

Who issues septic and well permits in Hunterdon County?

The county's page on septic systems and wells: Division of Public Health Nursing.

Is my lot in a flood zone?

We do not have flood maps for Hunterdon County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 34019

Hunterdon CountyNew Jersey

Hunterdon County is a New Jersey county with its seat in Flemington, created in 1714. The county was named after Robert Hunter.

Founded1714
County seatFlemington
Named forRobert Hunter
Land area428 sq mi + 9.6 sq mi water
Population128,947 2020 Census
Parcels mapped54,763 checked 15 October 2026

Open the free map Click any parcel in Hunterdon County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 20 October 2026

Census outline · seat marked

History

Founded in 1714

An old deed may name a county that no longer exists, or a boundary that has since moved.

Hunterdon County was created on March 11, 1713/1714 from Burlington County. Over the following decades, Hunterdon lost territory to the creation of Morris County in 1739 and Mercer County in 1838–1839, while also gaining and losing land through boundary adjustments with Mercer and Somerset counties through 1845.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

1714
Hunterdon County created 11 March 1713/1714. Hunterdon created from Burlington and Non-County Area (West). The non-county area was eliminated.
from Burlington
11 March 1714 · Paterson, 4; Snell, 196; Snyder, 32
1739
Lost territory 15 March 1738/1739. Hunterdon lost to creation of Morris.
to Morris
15 March 1739 · Paterson, 12-13; Snyder, 32
1838
Lost territory Hunterdon lost to the creation of Mercer.
to Mercer
22 February 1838 · N.J. Acts 1838, p. 99; Snyder, 37
1839
Lost territory Hunterdon lost to Mercer.
to Mercer
14 February 1839 · N.J. Acts 1839, p. 39; Snyder, 37
1844
Gained territory Hunterdon gained from Mercer, lost to Somerset.
from Mercer from Somerset
13 March 1844 · N.J. Acts 1844, pp. 244, 253; Snyder, 38

Show all 8 changes (3 more)

1714
Hunterdon County created 11 March 1713/1714. Hunterdon created from Burlington and Non-County Area (West). The non-county area was eliminated.
from Burlington
11 March 1714 · Paterson, 4; Snell, 196; Snyder, 32
1739
Lost territory 15 March 1738/1739. Hunterdon lost to creation of Morris.
to Morris
15 March 1739 · Paterson, 12-13; Snyder, 32
1838
Lost territory Hunterdon lost to the creation of Mercer.
to Mercer
22 February 1838 · N.J. Acts 1838, p. 99; Snyder, 37
1839
Lost territory Hunterdon lost to Mercer.
to Mercer
14 February 1839 · N.J. Acts 1839, p. 39; Snyder, 37
1844
Gained territory Hunterdon gained from Mercer, lost to Somerset.
from Mercer from Somerset
13 March 1844 · N.J. Acts 1844, pp. 244, 253; Snyder, 38
1845
Lost territory Hunterdon lost to Mercer.
to Mercer
5 February 1845 · N.J. Acts 1845, p. 32; Snyder, 38
1845
Gained territory Hunterdon gained from Somerset.
from Somerset
14 February 1845 · N.J. Acts 1845, p. 45; Snyder, 38
1965
Boundary clarified Boundary between Hunterdon and Somerset clarified (no change).
with Somersetno change
17 December 1965 · N.J. Acts 1965, p. 861; Snyder, 48

Land and parcels

What the maps cover in Hunterdon

Who publishes each layer, how good it is, and when we last checked.

Parcels Good enough

Lot lines and tax-map numbers for 54,763 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026
Address points Official

One point per address, 56,872 in all from NJOGIS.
edited 23 September 2026 · 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

Hunterdon by the Census

Population

128,947 2020 Census count

Housing units

51,687 2020 Census count

Land area

428 square miles

Water area

9.6 square miles

People per sq mi

301 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Assessor and property recordsfrom co.hunterdon.nj.us · checked 13 October 2026
Clerk of court: deeds and platsfrom co.hunterdon.nj.us · checked 13 October 2026

Permits

Health department: septic and wellfrom co.hunterdon.nj.us · checked 13 October 2026
Permit Applications & Formsfrom co.hunterdon.nj.us
Driveway Permit Application (PDF)from co.hunterdon.nj.us
Septic Repair Policy (PDF)from co.hunterdon.nj.us
Septic Repair Application Form - $80 Fee (PDF)from co.hunterdon.nj.us

Zoning and code

Planning and zoningfrom co.hunterdon.nj.us · checked 13 October 2026

GIS and maps

County GIS and maps 908-788-1421from co.hunterdon.nj.us · checked 13 October 2026

County government

County government
The official website of Hunterdon County.
co.hunterdon.nj.us

See your own lot on these maps

Open Hunterdon 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Hunterdon County

When was Hunterdon County founded?: Hunterdon County was founded in 1714, and named after Robert Hunter.
What is the county seat of Hunterdon County?: The county seat of Hunterdon County is Flemington.
Is there an online parcel map for Hunterdon County?: Yes. A public source publishes a parcel map of 54,763 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Hunterdon County's boundary or name changed?: Hunterdon County was created in 1714. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Mercer County, Somerset County and Morris County.
Who issues building permits in Hunterdon County?: The county's page on building permits: Permit Applications & Forms. Inside a city or town, ask that city first.
Who issues septic and well permits in Hunterdon County?: The county's page on septic systems and wells: Division of Public Health Nursing.
Is my lot in a flood zone?: We do not have flood maps for Hunterdon County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

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