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County · code 42037

Columbia CountyPennsylvania

Columbia County is a county in Pennsylvania, founded in 1813, with its seat at Bloomsburg.

  • Founded1813
  • County seatBloomsburg
  • Named forChristopher Columbus
  • Land area483 sq mi + 7.2 sq mi water
  • Population64,727 2020 Census
  • Parcels mapped34,249 checked 14 October 2026
Open the free map Click any parcel in Columbia County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

MontourNorthumberlandSchuylkillSullivanLuzerneLycoming Bloomsburg Census outline · seat marked

Where it is

Columbia 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 CountyCrawford CountyCumberland 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 CountyColumbia County Columbia
Counties of Pennsylvania · Columbia highlighted

History

Formed in 1813 from Northumberland County

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

Columbia County was created from Northumberland County in 1813. Over the following years, the county experienced several boundary adjustments, losing and gaining territory through the creation and changes involving Luzerne, Northumberland, Schuylkill, and Montour counties between 1815 and 1853.

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

  1. 1813
    Columbia County created Columbia created from Northumberland.
    from Northumberland
    · Pa. Laws 1812-1813, ch. 109, secs. 1-2/p. 146
  2. 1815
    Lost territory Columbia lost to Luzerne.
    to Luzerne
    · Pa. Laws 1814-1815, ch. 35, sec. 1/pp. 43-44
  3. 1815
    Lost territory Columbia lost to Northumberland.
    to Northumberland
    · Pa. Laws 1814-1815, ch. 30, sec. 1/p. 38
  4. 1816
    Gained territory Columbia gained from Northumberland.
    from Northumberland
    · Pa. Laws 1815-1816, ch. 9, sec. 1/pp. 6-7
  5. 1818
    Lost territory Columbia lost to Schuylkill.
    to Schuylkill
    · Pa. Laws 1817-1818, ch. 67, sec. 1/pp. 130-131
Show all 9 changes (4 more)
  1. 1813
    Columbia County created Columbia created from Northumberland.
    from Northumberland
    · Pa. Laws 1812-1813, ch. 109, secs. 1-2/p. 146
  2. 1815
    Lost territory Columbia lost to Luzerne.
    to Luzerne
    · Pa. Laws 1814-1815, ch. 35, sec. 1/pp. 43-44
  3. 1815
    Lost territory Columbia lost to Northumberland.
    to Northumberland
    · Pa. Laws 1814-1815, ch. 30, sec. 1/p. 38
  4. 1816
    Gained territory Columbia gained from Northumberland.
    from Northumberland
    · Pa. Laws 1815-1816, ch. 9, sec. 1/pp. 6-7
  5. 1818
    Lost territory Columbia lost to Schuylkill.
    to Schuylkill
    · Pa. Laws 1817-1818, ch. 67, sec. 1/pp. 130-131
  6. 1850
    Lost territory Columbia lost to the creation of Montour.
    to Montour
    · Pa. Laws 1850, no. 387, secs. 2, 5/pp. 658-659
  7. 1853
    Gained territory Columbia gained from Montour.
    from Montour
    · Pa. Laws 1853, no. 3, sec. 2/p. 3
  8. 1860
    Boundary clarified Boundary between Columbia and Luzerne clarified (no change).
    with Luzerneno change
    · Pa. Laws 1860, no. 469, sec. 1/pp. 560-561
  9. 1861
    Boundary clarified Boundary between Columbia and Luzerne clarified (no change).
    with Luzerneno change
    · Pa. Laws 1861, no. 394, sec. 1/p. 424

Land and parcels

What the maps cover in Columbia

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

Columbia by the Census

Population
64,727 2020 Census count
Housing units
29,654 2020 Census count
Land area
483 square miles
Water area
7.2 square miles
People per sq mi
134 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

Columbia 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

Open Columbia 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.

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Questions

Common questions about Columbia County

When was Columbia County founded?
Columbia County was founded in 1813, formed from Northumberland County, and named after Christopher Columbus.
What is the county seat of Columbia County?
The county seat of Columbia County is Bloomsburg.
Is there an online parcel map for Columbia County?
Yes. Columbia County publishes a parcel map of 34,249 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Columbia County's boundary or name changed?
Columbia County was created in 1813 from Northumberland County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Montour County, Northumberland County and Luzerne County.
Is my lot in a flood zone?
We do not have flood maps for Columbia 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