Maine

Kennebec

123,642

2020 population

1800

first census record

census records

About Kennebec

Kennebec, Maine, first appears in the United States federal census in 1800, when it recorded a population of 24,571. At the most recent census, in 2020, its population stood at 123,642.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 5 documented military engagements have been recorded within the county, among them Siege of Fort St. John (Pemaquid area raids), Colonel Westbrook Expedition 1722, Capt. Harmon's Norridgewock Expedition (Dummer's War), and 135 places are listed on the National Register of Historic Places.

Population by decade

Census Year	Population	Chart
2020	123,642
2010	122,151
2000	117,114
1990	115,904
1980	109,889
1970	95,247
1960	89,150
1950	83,881
1940	77,231
1930	70,691
1920	63,844
1910	62,863
1900	59,117
1890	57,012
1880	53,058
1870	53,203
1860	55,655
1850	62,521
1840	55,823
1830	52,485
1820	42,623
1810	32,564
1800	24,571

Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Kennebec

Military engagements that took place in Kennebec, Maine.

Siege of Fort St. John (Pemaquid area raids)

1692

Colonel Westbrook Expedition 1722

1722

Capt. Harmon's Norridgewock Expedition (Dummer's War)

1722

Maine Frontier Raids 1723

1723

Father Rale's War – Gorham's Rangers Kennebec Patrol 1724

1724

Historic places in Kennebec

National Register of Historic Places listings in Kennebec, Maine.

Maine State House

Augusta

Togus VA Medical Center and National Cemetery

Augusta

Pittston Congregational Church

Pittston

Fuller-Weston House

Augusta

Kennebec County Courthouse

Augusta

Fort Halifax

Winslow

Waterville Main Street Historic District

Waterville

Christ Episcopal Church

Gardiner

Williams Block

Augusta

Sturgis and Haskell Building

Adams, D. V., Co.-Bussell and Weston

South Parish Congregational Church and Parish House

Browse all Mainehistoric sites ›

Other counties in Maine

Explore census history and historic records for more Maine counties.

Androscoggin Aroostook Cumberland Franklin Hancock Knox Lincoln Oxford Penobscot Piscataquis Sagadahoc Somerset Waldo Washington York

Unlimited access

Everything a full report reveals about Kennebec County, Maine

This page charts the census history of Kennebec County, Maine. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview

An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.

The Land

The historic sites and place names around the location, and how this land was settled and used.

Geology

The bedrock beneath the site, its age and rock type, reaching back millions of years.

LiDAR Terrain

Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.

Conflict & War

The battles, raids and skirmishes fought near here, across every era of American conflict.

The Civil War

The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.

The Soldiers

The men who marched from here in the Civil War, named and traced where the record allows.

Native Heritage

The Native nations who held this land, mapped across time from before European contact to today.

Settlement

Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.

The Community

How the town grew, who came, and what kind of place it became, traced through the census record.

Rivers & Rail

The rivers, canals and railroads that connected this place between 1830 and 1911.

Notable People

The people born, buried or genuinely tied to this exact place, with their stories.

Historical Maps

Historic maps of the location layered over how it looks today.

Finds & Access

Museum objects tied to the area, and the laws on searching, collecting and access here.

Literature

The old books, county histories and archives that mention this place, quoted with their sources.

Spotlight

A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.

Points of Interest

The most significant historic sites and landmarks near the location, and why they matter.

Timeline

The whole story of the location told era by era, from first peoples to the present day.

First month just $5.99, then $11.99 a month. Unlimited locations, cancel anytime.

Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.

Start your Kennebec County, Maine report

Or see a real report first

Explore Maine records

Mainehistory ›NRHP historic sites ›Notable people from Maine›

Frequently asked about Kennebec

When does Kennebec first appear in the US census?

Kennebec, Maine first appears in the federal census in 1800, with a recorded population of 24,571.

What is the population of Kennebec?

At the most recent federal census (2020), Kennebec had a recorded population of 123,642.

Were any battles fought in Kennebec?

5 documented military engagements took place in Kennebec, including Siege of Fort St. John (Pemaquid area raids), Colonel Westbrook Expedition 1722, Capt. Harmon's Norridgewock Expedition (Dummer's War).

How many historic places are in Kennebec?

135 sites are listed on the National Register of Historic Places in Kennebec, Maine.

Aubrey Research

Research the history of any US location

Aubrey searches federal archives, archaeological records, historic registers, and primary sources to build a full historical report for any address or place in the United States.

Research your location View a free sample report