New York

Putnam

97,668
2020 population
1820
first census record
21
census records

About Putnam

Putnam, New York, first appears in the United States federal census in 1820, when it recorded a population of 11,268. At the most recent census, in 2020, its population stood at 97,668.

Its recorded population peaked at 99,710 in 2010, and has since declined by roughly 2 percent.

On the ground today, one documented military engagement has been recorded within the county, among them West Point – Arnold's Conspiracy, and 50 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202097,668
201099,710
200095,745
199083,941
198077,193
197056,696
196031,722
195020,307
194016,555
193013,744
192010,802
191014,665
190013,787
189014,849
188015,181
187015,420
186014,002
185014,138
184012,825
183012,628
182011,268
Source

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

Battles & engagements in Putnam

Military engagements that took place in Putnam, New York.

West Point – Arnold's Conspiracy
1780

Historic places in Putnam

National Register of Historic Places listings in Putnam, New York.

Manitoga
Garrison
Fish and Fur Club
Nelsonville
Eagle's Rest
Philipstown
Old Southeast Town Hall
Brewster
Grove, The
Cold Spring
Boscobel
Garrison
Champlin, H. D., & Son Horseshoeing and Wagonmaking
Nelsonville
DeRham Farm
Garrison
Hustis House
Nelsonville
St. Andrew's Episcopal Church
Brewster
St. Philip's Church in the Highlands
Garrison
Woodlawn
Garrison
First National Bank of Brewster
Brewster
Montrest
Philipstown
Gilead Cemetery
Carmel
Valhalla Highlands Historic District
Cold Spring
Old Southeast Church
Brewster
Putnam County Courthouse
Carmel
West Point Foundry
Cold Spring
Castle Rock
Garrison
Glenfields
Philipstown
Normandy Grange
Philipstown
Reed Memorial Library
Carmel
West Point Foundry Archeological Site
Cold Spring
Browse all New Yorkhistoric sites ›

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Everything a full report reveals about Putnam County, New York

This page charts the census history of Putnam County, New York. 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 Putnam

When does Putnam first appear in the US census?
Putnam, New York first appears in the federal census in 1820, with a recorded population of 11,268.
What is the population of Putnam?
At the most recent federal census (2020), Putnam had a recorded population of 97,668.
When did Putnam's population peak?
Putnam's recorded population peaked at 99,710 in 2010.
Were any battles fought in Putnam?
1 documented military engagement took place in Putnam, including West Point – Arnold's Conspiracy.
How many historic places are in Putnam?
50 sites are listed on the National Register of Historic Places in Putnam, New York.
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