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County · code 42041

Cumberland CountyPennsylvania

Cumberland County is a county in Pennsylvania with its seat in Carlisle, formed in 1750. The county was named after Cumberland.

  • Founded1750
  • County seatCarlisle
  • Named forCumberland, England
  • Land area545 sq mi + 4.8 sq mi water
  • Population259,469 2020 Census
  • Parcels mapped104,745 checked 14 October 2026
Open the free map Click any parcel in Cumberland County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

PerryAdamsFranklinDauphinYork Carlisle Census outline · seat marked

Where it is

Cumberland on the map of Pennsylvania

Pennsylvania has 67 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAllegheny CountyArmstrong CountyBeaver CountyBedford CountyBerks CountyBlair CountyBradford CountyBucks CountyButler CountyCambria CountyCameron CountyCarbon CountyCentre CountyChester CountyClarion CountyClearfield CountyClinton CountyColumbia CountyCrawford CountyDauphin CountyDelaware CountyElk CountyErie CountyFayette CountyForest CountyFranklin CountyFulton CountyGreene CountyHuntingdon CountyIndiana CountyJefferson CountyJuniata CountyLackawanna CountyLancaster CountyLawrence CountyLebanon CountyLehigh CountyLuzerne CountyLycoming CountyMcKean CountyMercer CountyMifflin CountyMonroe CountyMontgomery CountyMontour CountyNorthampton CountyNorthumberland CountyPerry CountyPhiladelphia CountyPike CountyPotter CountySchuylkill CountySnyder CountySomerset CountySullivan CountySusquehanna CountyTioga CountyUnion CountyVenango CountyWarren CountyWashington CountyWayne CountyWestmoreland CountyWyoming CountyYork CountyCumberland County Cumberland
Counties of Pennsylvania · Cumberland highlighted

History

Formed in 1750 from Lancaster County

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

Cumberland County was created in 1750 from Lancaster County and Non-County Area. The county lost land repeatedly over the following decades as new counties were created from it: Berks in 1752, Bedford in 1771, Northumberland in 1772, Franklin in 1784, Mifflin in 1789, Perry in 1820, and Franklin again in 1835.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1750
    Cumberland County created Cumberland created from Lancaster and Non-County Area 1.
    from Lancaster
    · Pa. Stat., ch. 380, sec. 1/5:87-88
  2. 1751
    Exchanged territory Cumberland exchanged with York.
    with York
    · Pa. Stat., ch. 387, sec. 1/5:106-107
  3. 1752
    Lost territory Cumberland lost to the creation of Berks.
    to Berks
    · Pa. Stat., ch. 392, sec. 1/5:133-134
  4. 1771
    Lost territory Cumberland lost to the creation of Bedford.
    to Bedford
    · Pa. Stat., ch. 629, sec. 1/8:46-47
  5. 1772
    Lost territory Cumberland lost to the creation of Northumberland, lost to Bedford.
    to Northumberlandto Bedford
    · Pa. Stat., ch. 644, sec. 1/8:143-144; ch. 658, sec. 2/8:230
Show all 13 changes (8 more)
  1. 1750
    Cumberland County created Cumberland created from Lancaster and Non-County Area 1.
    from Lancaster
    · Pa. Stat., ch. 380, sec. 1/5:87-88
  2. 1751
    Exchanged territory Cumberland exchanged with York.
    with York
    · Pa. Stat., ch. 387, sec. 1/5:106-107
  3. 1752
    Lost territory Cumberland lost to the creation of Berks.
    to Berks
    · Pa. Stat., ch. 392, sec. 1/5:133-134
  4. 1771
    Lost territory Cumberland lost to the creation of Bedford.
    to Bedford
    · Pa. Stat., ch. 629, sec. 1/8:46-47
  5. 1772
    Lost territory Cumberland lost to the creation of Northumberland, lost to Bedford.
    to Northumberlandto Bedford
    · Pa. Stat., ch. 644, sec. 1/8:143-144; ch. 658, sec. 2/8:230
  6. 1779
    Lost territory Cumberland lost to Bedford.
    to Bedford
    · Pa. Stat., ch. 848, sec. 1/9:396-398
  7. 1784
    Lost territory Cumberland lost to the creation of Franklin.
    to Franklin
    · Pa. Stat., ch. 1107, sec. 1/11:359-360
  8. 1789
    Lost territory Cumberland lost to the creation of Mifflin.
    to Mifflin
    · Pa. Stat., ch. 1436, sec. 1/13:321-322
  9. 1790
    Boundary clarified Boundary between Cumberland and Franklin clarified (no change).
    with Franklinno change
    · Pa. Stat., ch. 1498, sec. 1/13:475
  10. 1820
    Lost territory Cumberland lost to creation of Perry.
    to Perry
    · Pa. Laws 1819-1820, ch. 68, sec. 1/p. 92
  11. 1823
    Boundary clarified Boundary between Cumberland and York clarified (no change).
    with Yorkno change
    · Pa. Laws 1822-1823, ch. 122, sec. 4/p. 193
  12. 1832
    Boundary clarified Boundary between Cumberland and Adams redefined (no change).
    with Adamsno change
    · Pa. Laws 1831-1832, no. 175, secs. 21, 24/pp. 457-458
  13. 1835
    Lost territory Cumberland lost small area to Franklin.
    to Franklin
    · Pa. Laws 1834-1835, no. 75, sec. 1/pp. 106-107

Land and parcels

What the maps cover in Cumberland

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

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

Cumberland by the Census

Population
259,469 2020 Census count
Housing units
109,125 2020 Census count
Land area
545 square miles
Water area
4.8 square miles
People per sq mi
476 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

Cumberland County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

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Questions

Common questions about Cumberland County

When was Cumberland County founded?
Cumberland County was founded in 1750, formed from Lancaster County, and named after Cumberland, England.
What is the county seat of Cumberland County?
The county seat of Cumberland County is Carlisle.
Is there an online parcel map for Cumberland County?
Yes. Cumberland County publishes a parcel map of 104,745 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Cumberland County's boundary or name changed?
Cumberland County was created in 1750 from Lancaster County. Since then the Atlas of Historical County Boundaries records 9 later changes, chiefly involving Bedford County, Franklin County and Berks County.
Is my lot in a flood zone?
We do not have flood maps for Cumberland County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door