When was Hampshire County founded?

Hampshire County was founded in 1662, and named after Hampshire, England.

What is the county seat of Hampshire County?

The county seat of Hampshire County is Northampton.

Is there an online parcel map for Hampshire County?

Yes. MassGIS (Bureau of Geographic Information), Commonwealth of Massachusetts publishes a parcel map of 61,736 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Hampshire County's boundary or name changed?

Hampshire County was created in 1662. Since then the Atlas of Historical County Boundaries records 26 later changes, chiefly involving Worcester County, Berkshire County and Franklin County.

Is my lot in a flood zone?

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

County · code 25015

Hampshire CountyMassachusetts

Hampshire County is a county in western Massachusetts, with its seat in Northampton. It was created in 1662 from towns including Springfield, Northampton, and Hadley.

Founded1662
County seatNorthampton
Named forHampshire, England
Land area527 sq mi + 18 sq mi water
Population162,308 2020 Census
Parcels mapped61,736 checked 15 October 2026

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

Updated 20 October 2026

Census outline · seat marked

Where it is

Hampshire on the map of Massachusetts

Massachusetts has 14 counties and county equivalents, each with its own records office. Shapes with a page are links.

Counties of Massachusetts · Hampshire highlighted

History

Founded in 1662

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

Hampshire County was formed in 1662, and named after Hampshire, England. Northampton is the county seat.

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

1662
Hampshire County created Hampshire created from Non-County Area 1 (towns of Springfield, Northampton, Hadley, and all territory within 30 miles), effectively covering the entire western part of the province. 7 May 1662 · Mass. Recs., vol. 4, pt. 2:52
1669
Gained territory Hampshire gained from non-county area in Connecticut when the town of Westfield (now Southwick) was created from the town of Springfield. Part of Westfield extended into Connecticut, the result of disagreement over the line between Connecticut and Massachusetts. 19 May 1669 · Bowen, Disputes, 53-58; Mass. Recs., vol. 4, pt. 2:432
1674
Gained territory Hampshire gained non-county area in Connecticut when the town of Suffield was created. Suffield was entirely within present Connecticut, the result of uncertain geographical knowledge and disagreement over the boundary between the colonies. 3 June 1674 · Bowen, Disputes, 53-58; Mass. Recs., 5:13
1683
Gained territory Hampshire gained non-county area in Connecticut when the town of Enfield was created. Most of Enfield was in present Connecticut, the result of uncertain geographical knowledge and disagreement over the boundary between the colonies. 16 May 1683 · Bowen, Disputes, 53-58; Mass. Recs., 5:410-411
1731
Lost territory Hampshire lost to creation of Worcester.
to Worcester
10 July 1731 · Mass. Col. Acts, vol. 2, ch. 8 [1730-1731], sec. 1/p. 584

Show all 32 changes (27 more)

1662
Hampshire County created Hampshire created from Non-County Area 1 (towns of Springfield, Northampton, Hadley, and all territory within 30 miles), effectively covering the entire western part of the province. 7 May 1662 · Mass. Recs., vol. 4, pt. 2:52
1669
Gained territory Hampshire gained from non-county area in Connecticut when the town of Westfield (now Southwick) was created from the town of Springfield. Part of Westfield extended into Connecticut, the result of disagreement over the line between Connecticut and Massachusetts. 19 May 1669 · Bowen, Disputes, 53-58; Mass. Recs., vol. 4, pt. 2:432
1674
Gained territory Hampshire gained non-county area in Connecticut when the town of Suffield was created. Suffield was entirely within present Connecticut, the result of uncertain geographical knowledge and disagreement over the boundary between the colonies. 3 June 1674 · Bowen, Disputes, 53-58; Mass. Recs., 5:13
1683
Gained territory Hampshire gained non-county area in Connecticut when the town of Enfield was created. Most of Enfield was in present Connecticut, the result of uncertain geographical knowledge and disagreement over the boundary between the colonies. 16 May 1683 · Bowen, Disputes, 53-58; Mass. Recs., 5:410-411
1691
Changed Hampshire continued under the new Massachusetts Bay provincial charter issued by King William Iii and Queen Mary Ii (no change).
IiiIi
7 October 1691 · Mass. Col. Acts, vol. 1, ch. 27 [1692-1693], sec. 1/p. 63; Swindler, 5:80
1731
Lost territory Hampshire lost to creation of Worcester.
to Worcester
10 July 1731 · Mass. Col. Acts, vol. 2, ch. 8 [1730-1731], sec. 1/p. 584
c. 1742
Lost territory Hampshire lost to Worcester when town of Western (now Warren) was created from towns of Brookfield, Brimfield, and Kingsfield.
to Worcester
16 January 1742 · Mass. Col. Acts, vol. 2, ch. 17 [1741-1742], sec. 2/p. 1088
1749
Lost territory In May 1749, Hampshire lost the towns of Enfield, Somers (formerly part of Enfield), and Suffield to Connecticut when Connecticut responded to the towns' request for annexation and extended jurisdiction over the area south of the 1713 provincial line. Hampshire continued to control a small part of Southwick that extended into Connecticut. 31 May 1749 · Bowen, Disputes, 62; Hooker, 22, 26
1753
Boundary clarified Hampshire boundaries were redefined to cover all territory west of the Connecticut River (no change).
no change
12 April 1753 · Mass. Col. Acts, vol. 3, ch. 27 [1752-1753]/p. 656
1756
Changed Boundary between Hampshire and Worcester was adjusted when the dispute between the towns of Greenwich (extinct) and Hardwick was settled (no change).
Worcester
9 June 1756 · Mass. Col. Acts, vol. 15, ch. 51 [1756-1757]/p. 550
1761
Lost territory Hampshire lost to creation of Berkshire.
to Berkshire
30 June 1761 · Mass. Col. Acts, vol. 4, ch. 33 [1760-1761], sec. 1/p. 432
1764
Lost territory Hampshire lost small area to Worcester when town of Western (now Warren) gained from town of Palmer.
to Worcester
5 January 1764 · Mass. Col. Acts, vol. 17, ch. 14 [1764-1765]/p. 516
1765
Gained territory Hampshire gained small area from Worcester when town of Greenwich (extinct) gained from town of Hardwick.
from Worcester
5 February 1765 · Mass. Col. Acts, vol. 17, ch. 218 [1764-1765]/p. 603
1768
Gained territory Hampshire gained from Berkshire when town of Worthington was created from Plantation #3.
from Berkshire
30 June 1768 · Mass. Col. Acts, vol. 4, ch. 16 [1768], sec. 1/p. 1028
1774
Lost territory In 1774, Hampshire lost to Hartford (Connecticut) when Connecticut unilaterally took over part of the town of Southwick that extended south of the 1713 provincial boundary.
to Hartford (Conn.)
31 December 1774 · Bowen, Disputes, 65; Hooker, 25
1779
Gained territory Hampshire gained from Berkshire when town of Cummington was created from Plantation #5.
from Berkshire
23 June 1779 · Mass. Col. Acts, vol. 5, ch. 6 [1779-1780], sec. 1/pp. 1072-1073
1783
Gained territory Hampshire gained from Berkshire when town of Middlefield was created from towns of Worthington, Chester, Partridgefield (now Peru), Becket, Washington, and Prescott's Grant (now Middlefield).
from Berkshire
12 March 1783 · Mass. Acts 1783, ch. 19, sec. 1/p. 228
1783
Gained territory Hampshire gained from Worcester when town of Orange was created from towns of Athol and Royalston.
from Worcester
15 October 1783 · Mass. Acts 1783, ch. 2, sec. 1/p. 38
1785
Gained territory Hampshire gained from Berkshire when town of Rowe was created from the Myrifield Grant and non-town territory.
from Berkshire
9 February 1785 · Mass. Acts 1785, ch. 2, sec. 1/p. 230
1793
Gained territory Hampshire gained from Berkshire when town of Hawley gained from Plantation #7.
from Berkshire
9 March 1793 · Mass. Acts 1793, ch. 18, sec. 1/p. 242
1794
Lost territory Hampshire lost small area to Worcester when town of Western (now Warren) gained from town of Palmer to accommodate local property owners.
to Worcester
15 July 1794 · Temple, 10
1801
Lost territory Hampshire lost to Worcester when town of Dana (extinct) was created from towns of Greenwich (extinct), Hardwick, and Petersham.
to Worcester
18 February 1801 · Mass. Acts 1801, ch. 14, sec. 1/p. 453
1804
Gained territory In 1804, Hampshire gained from Hartford (Connecticut) when Massachusetts gained part of the town of Southwick (the "Southwick Jog") that lay south of the Connecticut boundary and that had been annexed from Massachusetts in 1774.
from Hartford (Conn.)
31 December 1804 · Hooker, 25-26; Van Zandt, 69
1811
Lost territory Hampshire lost to creation of Franklin.
to Franklin
2 December 1811 · Mass. Acts 1811, ch. 61/p. 467
1812
Lost territory Hampshire lost to creation of Hampden.
to Hampden
1 August 1812 · Mass. Acts 1812, ch. 137/p. 291
1822
Gained territory Hampshire gained from Franklin when town of Prescott (extinct) was created from towns of Pelham and New Salem.
from Franklin
28 January 1822 · Mass. Acts 1822, ch. 34, sec. 1/p. 614
1823
Gained territory Hampshire gained small area from Worcester when town of Ware gained from town of Western (now Warren).
from Worcester
8 February 1823 · Mass. Acts 1823, ch. 76/p. 114
1849
Boundary clarified Boundary between Hampshire and Franklin was clarified when line between towns of Williamsburg and Whately was clarified (no change).
with Franklinno change
2 February 1849 · Mass. Acts 1849, ch. 3/p. 198
1853
Gained territory Hampshire gained from Hampden when town of Norwich (now Huntington) gained from towns of Chester and Blandford.
from Hampden
25 May 1853 · Mass. Acts 1853, ch. 421, sec. 1/p. 639
1909
Lost territory Hampshire lost to Hampden when town of Holyoke gained from town of Northampton.
to Hampden
9 June 1909 · Mass. Acts 1909, ch. 480, sec. 1/p. 498
1910
Boundary clarified Boundary between Hampshire and Hampden was redefined in part when line between towns of Ware and Palmer was redefined (no change).
with Hampdenno change
29 March 1910 · Mass. Acts 1910, ch. 471, sec. 1/p. 422
1938
Lost territory Hampshire lost to Franklin when town of New Salem gained from towns of Enfield, Greenwich, and Prescott; Hampshire lost to Worcester when town of Petersham gained from towns of Dana, Greenwich, and Prescott, and when town of Hardwick gained from Greenwich. Dana, Enfield, Greenwich, and Prescott were disincorporated when Quabbin Reservoir was created in the Swift River Valley.
to Franklin to Worcester
28 April 1938 · Mass. Acts 1927, ch. 321, sec. 1/p. 384; Mass. Acts 1938, ch. 240, sec. 1/p. 188; Mass. Sec. Comm., 48

Land and parcels

What the maps cover in Hampshire

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

Parcels Good enough

Lot lines and tax-map numbers for 61,736 parcels from MassGIS (Bureau of Geographic Information), Commonwealth of Massachusetts. 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, 77,047 in all from MassGIS.
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

Hampshire by the Census

Population

162,308 2020 Census count

Housing units

66,245 2020 Census count

Land area

527 square miles

Water area

18 square miles

People per sq mi

308 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

Hampshire County's official site

We have found the county's site but not its offices yet; start there.

In Massachusetts, permits, zoning and assessing are handled by each city or town, not the county, and deeds are recorded at the county's registry of deeds (search the registries).

County government

County government
The official website of Hampshire County.
hampshirecog.org

See your own lot on these maps

Open Hampshire 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 Hampshire County

When was Hampshire County founded?: Hampshire County was founded in 1662, and named after Hampshire, England.
What is the county seat of Hampshire County?: The county seat of Hampshire County is Northampton.
Is there an online parcel map for Hampshire County?: Yes. MassGIS (Bureau of Geographic Information), Commonwealth of Massachusetts publishes a parcel map of 61,736 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Hampshire County's boundary or name changed?: Hampshire County was created in 1662. Since then the Atlas of Historical County Boundaries records 26 later changes, chiefly involving Worcester County, Berkshire County and Franklin County.
Is my lot in a flood zone?: We do not have flood maps for Hampshire County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby