Land area
All county subdivisions
364.9 square miles across 20 Census county subdivisions.
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Knox County at a Glance
Every number on this page is computed from the U.S. Census Bureau's 2024 Gazetteer records for this county. Nothing here is estimated.
18 municipalities364.9 sq mi landCensus 2024
1cities
16towns
1plantations
2other areas
Census-derived totals
Land, water, and communities
Water area
Lakes, rivers, coastal water
767.4 square miles of water area recorded in the same dataset.
Municipal governments
Cities, towns, plantations
18 organised municipalities, plus 2 unorganized territories and 0 gores or reservation lands.
Largest by land area
Knox County's biggest municipalities
Ranked by Census land area, not population.
All municipalities
Every city, town, and plantation
Open any community for its businesses, nearby towns, and Census facts.
AppletonTown
CamdenTown
CushingTown
FriendshipTown
HopeTown
Isle au HautTown
Matinicus IslePlantation
North HavenTown
Owls HeadTown
RocklandCity
RockportTown
South ThomastonTown
St. GeorgeTown
ThomastonTown
UnionTown
VinalhavenTown
WarrenTown
WashingtonTown
Business DirectoryHikingAttractionsParksLakesRiversSchoolsHospitalsEmergencyGovernmentHistoryWeatherCounty FactsMaps
Source: U.S. Census Bureau 2024 Gazetteer, County Subdivisions (retrieved 2026-10-19). Totals are summed from the county's records; they are not population estimates.