When was Montour County founded?

Montour County was founded in 1850, formed from Columbia County, and named after Isabelle Montour and Andrew Montour.

What is the county seat of Montour County?

The county seat of Montour County is Danville.

Is there an online parcel map for Montour County?

Yes. Montour County publishes a parcel map of 8,982 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Montour County's boundary or name changed?

Montour County was created in 1850 from Columbia County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Columbia County.

Is my lot in a flood zone?

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

County · code 42093

Montour CountyPennsylvania

Montour County is a county in Pennsylvania with its seat in Danville, formed in 1850.

Founded1850
County seatDanville
Named forIsabelle Montour and Andrew Montour
Land area130 sq mi + 2.1 sq mi water
Population18,136 2020 Census
Parcels mapped8,982 checked 16 October 2026

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

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1850 from Columbia County

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

Montour County was created from Columbia County on November 1, 1850. The county was named after Isabelle Montour and Andrew Montour. In 1853, Montour lost territory to Columbia County.

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

1850
Montour County created Montour created from Columbia.
from Columbia
1 November 1850 · Pa. Laws 1850, no. 387, secs. 2, 5/pp. 658-659
1853
Lost territory Montour lost to Columbia.
to Columbia
15 January 1853 · Pa. Laws 1853, no. 3, sec. 2/p. 3

Land and parcels

What the maps cover in Montour

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

Parcels Good enough

Lot lines and tax-map numbers for 8,982 parcels from Montour County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026
Address points Missing

No public address points layer found for Montour 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

Montour by the Census

Population

18,136 2020 Census count

Housing units

8,083 2020 Census count

Land area

130 square miles

Water area

2.1 square miles

People per sq mi

139 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

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Zoning and code

Zoningfrom montourcounty.gov

County government

County government
The official website of Montour County.
montourco.org

See your own lot on these maps

Open Montour 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 Montour County

When was Montour County founded?: Montour County was founded in 1850, formed from Columbia County, and named after Isabelle Montour and Andrew Montour.
What is the county seat of Montour County?: The county seat of Montour County is Danville.
Is there an online parcel map for Montour County?: Yes. Montour County publishes a parcel map of 8,982 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Montour County's boundary or name changed?: Montour County was created in 1850 from Columbia County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Columbia County.
Is my lot in a flood zone?: We do not have flood maps for Montour County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby