When was Sagadahoc County founded?

Sagadahoc County was founded in 1854, formed from Lincoln County.

What is the county seat of Sagadahoc County?

The county seat of Sagadahoc County is Bath.

Is there an online parcel map for Sagadahoc County?

Yes. Maine GeoLibrary (Maine Office of GIS) publishes a parcel map of 20,688 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Sagadahoc County's boundary or name changed?

Sagadahoc County was created in 1854 from Lincoln County. Since then the Atlas of Historical County Boundaries records 3 later changes, most of them small boundary adjustments, chiefly involving Cumberland County and Lincoln County.

Is my lot in a flood zone?

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

County · code 23023

Sagadahoc CountyMaine

Sagadahoc County is a county in Maine, with its seat in Bath, formed in 1854.

Founded1854
County seatBath
Land area254 sq mi + 116 sq mi water
Population36,699 2020 Census
Parcels mapped20,688 checked 16 October 2026

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

Updated 19 October 2026

Census outline · seat marked

Where it is

Sagadahoc 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 · Sagadahoc highlighted

History

Formed in 1854 from Lincoln County

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

Sagadahoc County was created from Lincoln County on April 4, 1854. In 1891, the county lost Ragged Island in Casco Bay to Cumberland County.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

1854
Sagadahoc County created Sagadahoc created from Lincoln.
from Lincoln
4 April 1854 · Me. Laws 1854, Pub., ch. 70, sec. 1/p. 82
1891
Lost territory Sagadahoc lost Ragged Island in Casco Bay to Cumberland.
to Cumberland
5 February 1891 · Me. Laws 1891, Priv., ch. 25/p. 25
1903
Boundary clarified Boundary between Sagadahoc and Cumberland was redefined (no change).
with Cumberlandno change
28 March 1903 · Me. Laws 1903, Priv., ch. 415/p. 628
1905
Boundary clarified Boundary between Sagadahoc and Cumberland was redefined (no change).
with Cumberlandno change
15 March 1905 · Me. Laws 1905, Priv., ch. 200/p. 231
1917
Boundary clarified Boundary between Sagadahoc and Cumberland was redefined (no change).
with Cumberlandno change
19 March 1917 · Me. Laws 1917, Priv., ch. 68/p. 501
1985
Changed Legislature authorized Sagadahoc to gain the towns of Brunswick and Harpswell from Cumberland, dependent on local referendum to be held during the 1986 general election. Change did not take effect.
Cumberland
20 June 1985 · Me. Laws 1985, 1st reg. sess., priv. & spec., ch. 37/pp. 2076-2078
1991
Changed Legislature authorized Lincoln to gain the town of Richmond from Sagadahoc, dependent on local referendum to be held in November 1991. Change did not take effect.
Lincoln
10 July 1991 · Me. Laws 1991, 1st reg. sess., priv. & spec., ch. 52/pp. 856-857

Land and parcels

What the maps cover in Sagadahoc

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

Parcels Good enough

Lot lines and tax-map numbers for 20,688 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 Sagadahoc 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

Sagadahoc by the Census

Population

36,699 2020 Census count

Housing units

18,938 2020 Census count

Land area

254 square miles

Water area

116 square miles · 31% of the county, including large bodies of water

People per sq mi

145 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

Sagadahoc 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 Sagadahoc County.
sagcounty.com

See your own lot on these maps

Open Sagadahoc 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 Sagadahoc County

When was Sagadahoc County founded?: Sagadahoc County was founded in 1854, formed from Lincoln County.
What is the county seat of Sagadahoc County?: The county seat of Sagadahoc County is Bath.
Is there an online parcel map for Sagadahoc County?: Yes. Maine GeoLibrary (Maine Office of GIS) publishes a parcel map of 20,688 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Sagadahoc County's boundary or name changed?: Sagadahoc County was created in 1854 from Lincoln County. Since then the Atlas of Historical County Boundaries records 3 later changes, most of them small boundary adjustments, chiefly involving Cumberland County and Lincoln County.
Is my lot in a flood zone?: We do not have flood maps for Sagadahoc County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby