Maryland

Frederick

271,717
2020 population
1790
first census record
24
census records

About Frederick

Frederick, Maryland, first appears in the United States federal census in 1790, when it recorded a population of 30,791. At the most recent census, in 2020, its population stood at 271,717.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 40 documented military engagements have been recorded within the county, among them Point of Rocks Skirmish, Raid on Point of Rocks Maryland, South Mountain — Fox's Gap Full Fight (September 14, 1862), and 101 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020271,717
2010233,385
2000195,277
1990150,208
1980114,792
197084,927
196071,930
195062,287
194057,312
193054,440
192052,541
191052,673
190051,920
189049,512
188050,482
187047,572
186046,591
185040,987
184036,405
183045,789
182040,459
181034,437
180031,523
179030,791
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Frederick

Military engagements that took place in Frederick, Maryland.

Point of Rocks Skirmish
1861
Raid on Point of Rocks Maryland
1861
South Mountain — Fox's Gap Full Fight (September 14, 1862)
1862
Crampton's Gap (South Mountain)
1862
Confederate Occupation of Frederick Maryland
1862
Battle of South Mountain: Crampton's Gap
1862
Battle of Fox's Gap (South Mountain)
1862
Middletown Valley Skirmish (September 1862)
1862
Battle of Turner's Gap (South Mountain)
1862
Battle of Crampton's Gap
1862
Battle of South Mountain — Fox Gap
1862
Battle of Point of Rocks Maryland
1862
Battle of Crampton's Gap (South Mountain)
1862
Fox's Gap (South Mountain)
1862
Turner's Gap (South Mountain)
1862
Urbana Skirmish
1862
Point of Rocks Skirmish 1862
1862
Burkittsville MD Skirmish 1862
1862
Monocacy Junction Skirmish 1862
1862
Emmitsburg Road Skirmishes
1863
Emmitsburg MD Skirmish 1863
1863
Monocacy – Best Farm Fighting
1864
Monocacy — Thomas Farm Assault July 9 1864
1864
Monocacy — Wallace's Scratch Force Defense (July 9, 1864)
1864
Frederick — Skirmish and Ransom Demand (July 9 1864)
1864
Battle of Monocacy — McCausland's Ford Crossing
1864
Monocacy — Ford Crossing Skirmish July 9 1864
1864
Battle of Monocacy — Thomas's Brigade at Best Farm
1864
Frederick MD Skirmish 1864 (Early's Raid)
1864
Battle of Monocacy — Tyler's Division Defense
1864
Monocacy – Thomas Ford Crossing
1864
Confederate Monocacy Crossing (July 9, 1864)
1864
Monocacy — Battle (July 9 1864)
1864
Monocacy — Ricketts' Division Last Stand (July 9, 1864)
1864
Monocacy — Georgetown Pike Bridge Defense
1864
Mouth of Monocacy / Junction Bridge 1864
1864
Monocacy — Railroad Junction Defense Outpost
1864
Battle of Frederick (1864)
1864
Monocacy Battle 1864
1864
Woodsboro MD Skirmish 1864
1864

Historic places in Frederick

National Register of Historic Places listings in Frederick, Maryland.

Cullen, Victor, School Power House
Sabillasville
Rose Hill Manor
Frederick
Point of Rocks Railroad Station
Point of Rocks
Amelung House and Glassworks
Urbana
Carrollton Manor
Buckeystown
Gambrill House
Frederick
Loats Female Orphan Asylum of Frederick City
Frederick
Grossnickel, Peter of P., Farm
Myersville
Jones, Abraham, House
Libertytown
Prospect Hall
Frederick
Frederick Historic District
Frederick
St. Joseph's College and Mother Seton Shrine (Additional Documentation)
Emmitsburg
Rich Mountain
Frederick
Stancioff House
Urbana
Camp Greentop Historic District
Thurmont
Burkittsville
Burkittsville
Buckeystown Historic District
Buckeystown
Monocacy National Battlefield
Frederick
Nolands Ferry I Archeological Site (18FR17)
Tuscarora
Scheifferstadt
Frederick
New Market Historic District
New Market
Spring Bank
Frederick
Smeltzer, Henry, Farmstead
Middletown
Utica Covered Bridge
Thurmont
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Other counties in Maryland

Explore census history and historic records for more Maryland counties.

AlleganyAnne ArundelBaltimoreBaltimore cityCalvertCarolineCarrollCecilCharlesDorchesterGarrettHarfordHowardKentMontgomeryPrince George'sQueen Anne'sSomersetSt. Mary'sTalbot
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Everything a full report reveals about Frederick County, Maryland

This page charts the census history of Frederick County, Maryland. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Frederick

When does Frederick first appear in the US census?
Frederick, Maryland first appears in the federal census in 1790, with a recorded population of 30,791.
What is the population of Frederick?
At the most recent federal census (2020), Frederick had a recorded population of 271,717.
Were any battles fought in Frederick?
40 documented military engagements took place in Frederick, including Point of Rocks Skirmish, Raid on Point of Rocks Maryland, South Mountain — Fox's Gap Full Fight (September 14, 1862).
How many historic places are in Frederick?
101 sites are listed on the National Register of Historic Places in Frederick, Maryland.
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