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History · Reservoir

Reservoir’s post office opened in 1900, and 21% of its homes were built before 1940

Below: maps from 1902 on.

1900first post office
0on the National Register
21%homes built before 1940
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Quick answers

How Reservoir began

When was Reservoir founded?

1900

The Reservoir post office opened in 1900, the earliest record of the town by name.

2020 census: 197126 years
Founding year: the first Reservoir post office (Blevins & Helbock, CC0).

What stands out about Reservoir’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

A history waiting to be writtenNo old photos of Reservoir are in the public archives yet. The rest are in attics and albums.On the map since 19023 editions of the USGS map, 1902 to 1972. Watch Reservoir change.Old housesHalf of Reservoir’s homes were built before 1946.
★ What stands out · Help out

Start Reservoir’s collection

The first neighbors to add old photos shape how Reservoir’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
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On the map

Reservoir on the map, 1902 to 1972

Every edition of the U.S. Geological Survey’s map of Reservoir. Tap a year, or press play to watch the town change.

Reservoir on the 1902 USGS mapReservoir on the 1963 USGS mapReservoir on the 1972 USGS map1902Hollidaysburg sheet · 1:62,500

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Reservoir.

The story so far

Reservoir, in brief

Wikipedia doesn’t have a history of Reservoir yet. The photos, dates and memories neighbors add here are how it gets written.

Reservoir is an unincorporated community and census-designated place (CDP) in Blair County, Pennsylvania, United States. It was first listed as a CDP prior to the 2020 census. The CDP is in south-central Blair County, in the eastern part of Blair Township. It is on the south side of the valley of the Frankstown Branch Juniata River. Reservoir Road is the main street through the community, leading northeast 1.5 miles (2.4 km) to Loop and southwest 4 miles (6 km) to McKee. Hollidaysburg, the Blair county seat, is 4 miles (6 km) to the north by road. Loop Mountain rises to the southeast to an elevation of 2,495 feet (760 m).

Its first post office opened in 1900.

Intro from Wikipedia. Population: U.S. Census Bureau.

By decade

No old photos in the archives yet

Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.

Be the first to add onePhotograph a print flat, in daylight, no flash.
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Famous people

Famous people close to Reservoir

Nobody well known was born in Reservoir itself, so here are the best known from just nearby.

See all →
Hedda HopperAmerican gossip columnist and actress · b. 1885
Ronald MallettAmerican theoretical physicist · b. 1945
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Sam LaffertyAmerican ice hockey player · b. 1995
A
Adam HuberAmerican actor · b. 1987
Daniel Hale WilliamsAfrican American cardiologist who performed the… · b. 1856
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Marion DoughertyAmerican casting director · b. 1923

Questions about Reservoir’s history

What year was Reservoir founded?

The Reservoir post office opened in 1900, the earliest record of the town by name (U.S. post office records).

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
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Sources

Where this page comes from

Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →

From U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.