Maine

Knox

40,607
2020 population
1860
first census record
17
census records

About Knox

Knox, Maine, first appears in the United States federal census in 1860, when it recorded a population of 32,716. At the most recent census, in 2020, its population stood at 40,607.

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

On the ground today, 3 documented military engagements have been recorded within the county, among them Whaleback Shell Midden Violence, Attack on St. George's Fort ME, Siege of Fort St. George Thomaston 1722, and 102 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202040,607
201039,736
200039,618
199036,310
198032,941
197029,013
196028,575
195028,121
194027,191
193027,693
192026,245
191028,981
190030,406
189031,473
188032,863
187030,823
186032,716
Source

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

Battles & engagements in Knox

Military engagements that took place in Knox, Maine.

Whaleback Shell Midden Violence
1200
Attack on St. George's Fort ME
1722
Siege of Fort St. George Thomaston 1722
1722

Historic places in Knox

National Register of Historic Places listings in Knox, Maine.

Olson House
South Cushing
Tillson Farm Barn
Glen Cove
Gushee Family House
Appleton
US Post Office-Camden Main
Camden
Camden Opera House Block
Camden
Rockland Residential Historic District
Rockland
High Street Historic District
Camden
Camden Great Fire Historic District
Camden
Alden, Ebenezer, House
Union
Isle Au Haut Light Station
Isle Au Haut
Matinicus Rock Light Station
Matinicus Island
Marshall Point Light Station
Port Clyde
Indian Island Light Station
Rockport
Burton, Benjamin, Garrison Site
Cushing
Knox County Courthouse
Rockland
LEWIS R. FRENCH (schooner)
Rockland
Thorndike, George, House
South Thomaston
Spite House
Rockport
TIMBERWIND (Schooner)
Rockport
Rockland Breakwater Lighthouse
Rockland
Whitehead Lifesaving Station
Sprucehead
Whitney Farm
Appleton
Curtis Island Light
Camden
ISAAC H. EVANS (schooner)
Rockland
Browse all Mainehistoric sites ›

Other counties in Maine

Explore census history and historic records for more Maine counties.

WashingtonYorkAndroscogginAroostookCumberlandFranklinHancockKennebecLincolnOxfordPenobscotPiscataquisSagadahocSomersetWaldo
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Everything a full report reveals about Knox County, Maine

This page charts the census history of Knox 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.
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Frequently asked about Knox

When does Knox first appear in the US census?
Knox, Maine first appears in the federal census in 1860, with a recorded population of 32,716.
What is the population of Knox?
At the most recent federal census (2020), Knox had a recorded population of 40,607.
Were any battles fought in Knox?
3 documented military engagements took place in Knox, including Whaleback Shell Midden Violence, Attack on St. George's Fort ME, Siege of Fort St. George Thomaston 1722.
How many historic places are in Knox?
102 sites are listed on the National Register of Historic Places in Knox, Maine.
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