When was Kennebec County founded?

Kennebec County was founded in 1799, formed from Lincoln County, and named after Kennebec River, Maine.

What is the county seat of Kennebec County?

The county seat of Kennebec County is Augusta.

Is there an online parcel map for Kennebec County?

Yes. Maine GeoLibrary (Maine Office of GIS) publishes a parcel map of 55,125 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Kennebec County's boundary or name changed?

Kennebec County was created in 1799 from Lincoln County. Since then the Atlas of Historical County Boundaries records 30 later changes, chiefly involving Somerset County, Lincoln County and Androscoggin County.

Is my lot in a flood zone?

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

County · code 23011

Kennebec CountyMaine

Kennebec County is a county in Maine with its seat in Augusta, formed in 1799.

Founded1799
County seatAugusta
Named forKennebec River, Maine
Land area867 sq mi + 84 sq mi water
Population123,642 2020 Census
Parcels mapped55,125 checked 16 October 2026

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

Updated 20 October 2026

Census outline · seat marked

Where it is

Kennebec on the map of Maine

Maine has 16 counties and county equivalents, each with its own records office. Shapes with a page are links.

Counties of Maine · Kennebec highlighted

History

Formed in 1799 from Lincoln County

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

Kennebec County was created by Massachusetts on February 20, 1799, from Lincoln County. The county is named after the Kennebec River. When Maine was separated from Massachusetts and admitted to the Union on March 15, 1820, Kennebec became a Maine county.

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

1799
Kennebec County created Kennebec created by Massachusetts from Lincoln.
from Lincoln
20 February 1799 · Mass. Acts 1799, ch. 23, sec. 1/p. 257
1805
Gained territory Kennebec gained from Cumberland.
from Cumberland
4 March 1805 · Mass. Acts 1805, ch. 24, secs. 1-2/pp. 573-574
1808
Lost territory Kennebec lost to Oxford.
to Oxford
8 March 1808 · Mass. Acts 1808, ch. 97/p. 323
1809
Lost territory Kennebec lost to creation of Somerset.
to Somerset
1 June 1809 · Mass. Acts 1809, ch. 62, sec. 1/p. 459
1820
Became part of Maine Kennebec became a county in the state of Maine when Maine was separated from Massachusetts and admitted to the Union. 15 March 1820 · U.S. Stat., vol. 3, ch. 19 [1820]/p. 544

Show all 35 changes (30 more, mostly small adjustments)

1799
Kennebec County created Kennebec created by Massachusetts from Lincoln.
from Lincoln
20 February 1799 · Mass. Acts 1799, ch. 23, sec. 1/p. 257
1799
Boundary clarified Boundary between Kennebec and Hancock was clarified (no change).
with Hancockno change
28 February 1799 · Mass. Acts 1799, ch. 39, sec. 1/p. 275
1805
Gained territory Kennebec gained from Cumberland.
from Cumberland
4 March 1805 · Mass. Acts 1805, ch. 24, secs. 1-2/pp. 573-574
1808
Lost territory Kennebec lost to Oxford.
to Oxford
8 March 1808 · Mass. Acts 1808, ch. 97/p. 323
1809
Lost territory Kennebec lost to creation of Somerset.
to Somerset
1 June 1809 · Mass. Acts 1809, ch. 62, sec. 1/p. 459
1810
Boundary clarified Boundary between Kennebec and Lincoln was redefined in part when the line between the towns of Gardiner and Litchfield was redefined (no change).
with Lincolnno change
6 March 1810 · Mass. Acts 1810, ch. 108/p. 194
1811
Lost territory Kennebec lost to Lincoln.
to Lincoln
25 February 1811 · Mass. Acts 1811, ch. 61/p. 290
1812
Exchanged territory Kennebec exchanged with Lincoln.
with Lincoln
29 February 1812 · Mass. Acts 1812, ch. 160/p. 309
1813
Gained territory Kennebec gained from Somerset.
from Somerset
26 February 1813 · Mass. Acts 1813, ch. 108/p. 179
1814
Lost territory Kennebec lost to Oxford.
to Oxford
28 January 1814 · Mass. Acts 1814, ch. 79/pp. 316-317
1820
Became part of Maine Kennebec became a county in the state of Maine when Maine was separated from Massachusetts and admitted to the Union. 15 March 1820 · U.S. Stat., vol. 3, ch. 19 [1820]/p. 544
1821
Gained territory Kennebec gained small area from Oxford.
from Oxford
8 February 1821 · Me. Priv. Acts 1821, ch. 35/p. 36
1821
Gained territory Kennebec gained small area from Lincoln.
from Lincoln
8 March 1821 · Me. Priv. Acts 1821, ch. 58/p. 58
1821
Gained territory Kennebec gained from Somerset.
from Somerset
17 March 1821 · Me. Priv. Acts 1821, ch. 76/p. 83
1827
Lost territory Kennebec lost to creation of Waldo.
to Waldo
3 July 1827 · Me. Pub. Acts 1827, ch. 354, sec. 1/p. 1109 and ch. 362/p. 1125
1830
Gained territory Kennebec gained small area from Somerset.
from Somerset
6 March 1830 · Me. Priv. Acts 1830, ch. 71/p. 123
1835
Gained territory Kennebec gained from Lincoln.
from Lincoln
10 March 1835 · Me. Priv. Acts 1835, ch. 553/p. 817
1838
Lost territory Kennebec lost to creation of Franklin.
to Franklin
9 May 1838 · Me. Pub. Acts 1838, ch. 328, sec. 1/p. 476; Me. Gov. Proc. 2:99-100
1840
Lost territory Kennebec lost to Somerset.
to Somerset
29 February 1840 · Me. Laws 1840, ch. 27, sec. 1/p. 26
1840
Gained territory Kennebec gained from Lincoln.
from Lincoln
6 March 1840 · Me. Laws 1840, ch. 5, sec. 1/p. 5 and ch. 37/p. 39
1844
Gained territory Kennebec gained from Oxford.
from Oxford
1 March 1844 · Me. Laws 1843, Priv., ch. 97, sec. 1/p. 102
1847
Lost territory Kennebec lost to Franklin when town of Chesterville gained from town of Vienna.
to Franklin
2 August 1847 · Me. Laws 1847, Priv., ch. 93/p. 132
1849
Lost territory Kennebec lost small area to Somerset when town of Canaan gained from town of Clinton.
to Somerset
24 July 1849 · Me. Laws 1849, Priv., ch. 234/p. 334
1850
Gained territory Kennebec gained small area from Somerset when town of Clinton gained from town of Canaan.
from Somerset
8 August 1850 · Me. Laws 1850, Priv., ch. 351/p. 487
1852
Boundary clarified Boundary between Kennebec and Franklin was redefined (no change).
with Franklinno change
9 April 1852 · Me. Laws 1852, Priv., ch. 566/p. 567
1852
Lost territory Kennebec lost small area to Lincoln when town of Lewiston gained from town of Greene to accommodate local property owner.
to Lincoln
20 April 1852 · Me. Laws 1852, Priv., ch. 617/p. 614
1854
Lost territory Kennebec lost to creation of Androscoggin.
to Androscoggin
31 March 1854 · Me. Laws 1854, Pub., ch. 60, sec. 1/p. 74
1855
Lost territory Kennebec lost small area to Androscoggin when town of Wales gained from town of Monmouth.
to Androscoggin
16 March 1855 · Me. Laws 1855, Priv., ch. 526/p. 588
1856
Lost territory Kennebec lost small area to Androscoggin when town of Wales gained from town of Litchfield.
to Androscoggin
12 March 1856 · Me. Laws 1856, Priv., ch. 592/p. 650
1859
Gained territory Kennebec gained small area from Androscoggin when town of Wayne gained from town of Leeds.
from Androscoggin
2 April 1859 · Me. Laws 1859, Priv., ch. 344/p. 317
1867
Lost territory Kennebec lost small area to Androscoggin when town of Webster gained from town of Litchfield.
to Androscoggin
14 February 1867 · Me. Laws 1867, Priv., ch. 270/p. 226
1873
Lost territory Kennebec lost small area to Waldo when town of Burnham gained from Clinton Gore Plantation.
to Waldo
26 February 1873 · Me. Laws 1873, Priv., ch. 384, sec. 1/p. 368
1873
Lost territory Kennebec lost small area to Somerset when town of Fairfield gained from town of Benton.
to Somerset
27 February 1873 · Me. Laws 1873, Priv., ch. 390, sec. 1/p. 378
1907
Lost territory Kennebec lost small area to Lincoln when town of Whitefield gained from town of Windsor.
to Lincoln
21 February 1907 · Me. Laws 1907, Priv., ch. 96/p. 316
1993
Boundary clarified Boundary between Kennebec and Lincoln was clarified (no change).
with Lincolnno change
13 October 1993 · Me. Laws 1993, 1st reg. sess., priv. & spec., ch. 15/p. 1095

Land and parcels

What the maps cover in Kennebec

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

Parcels Good enough

Lot lines and tax-map numbers for 55,125 parcels from Maine GeoLibrary (Maine Office of GIS). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 17 August 2026 · checked 16 October 2026
Address points Missing

No public address points layer found for Kennebec County yet.
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

Kennebec by the Census

Population

123,642 2020 Census count

Housing units

62,607 2020 Census count

Land area

867 square miles

Water area

84 square miles

People per sq mi

143 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

Kennebec County's official site

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

In Maine, 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.

County government

County government
The official website of Kennebec County.
kennebeccounty.org

See your own lot on these maps

Open Kennebec 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 Kennebec County

When was Kennebec County founded?: Kennebec County was founded in 1799, formed from Lincoln County, and named after Kennebec River, Maine.
What is the county seat of Kennebec County?: The county seat of Kennebec County is Augusta.
Is there an online parcel map for Kennebec County?: Yes. Maine GeoLibrary (Maine Office of GIS) publishes a parcel map of 55,125 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Kennebec County's boundary or name changed?: Kennebec County was created in 1799 from Lincoln County. Since then the Atlas of Historical County Boundaries records 30 later changes, chiefly involving Somerset County, Lincoln County and Androscoggin County.
Is my lot in a flood zone?: We do not have flood maps for Kennebec County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby