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A−History
History · Tinicum Township

Tinicum Township’s post office opened in 1884, and 25% of its homes were built before 1940

More historic than 81% of U.S. towns · #310 of 1,035 in Pennsylvania. What drives it

11 places in town are on the National Register, among them two historic districts with 107 buildings between them. Below: 1 old photo or paper, maps from 1890 on, and the census since 1930.

1884first post office
11on the National Register
25%homes built before 1940
1old photo or paper
From Tinicum Township’s archive · credits on each photo
Quick answers

How Tinicum Township began

When was Tinicum Township founded?

1884

The Tinicum Township post office opened in 1884, the earliest record of the town by name. Four smaller post offices, Mattsville (1828), Uhlerstown (1871) and Tinicum (1884), opened inside today’s town and later closed.

First census: 1,330 in 19302020 census: 3,818142 years

How historic is Tinicum Township?

A−

More historic than 81% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: the first Tinicum Township post office (Blevins & Helbock, CC0).The full story ↓
History grade

What drives Tinicum Township’s History grade

On its age, its old homes and the National Register, Tinicum Township is more historic than 81% of U.S. towns, #310 of 1,035 in Pennsylvania. Its National Register listings hold the grade up; its age pulls it down.

A−
HistoryA character grade: shown, never part of Tinicum Township’s overall grade.
All U.S. towns we grade (21,289)Ahead of 81%
NewerOlder
Pennsylvania towns of 2,500+ (1,035)Ahead of 70%

Pennsylvania towns list about as much on the Register as the country (a typical Pennsylvania town has 2.1 per 10,000 residents, the U.S. 2.4), so Tinicum Township’s 332 sits above most of its state (93% of Pennsylvania towns have fewer) while its 127 historic buildings outnumber those of 91% of U.S. towns.

How sure. Graded on any two of the three inputs instead, the letter would range from B to A. The pre-1940 share is a Census survey estimate (±7.8 points). The founding year is the first post office, not a stated founding date.

Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →

What stands out about Tinicum Township’s past

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

★ What stands out · Places that used to be

Lost post offices, old corners, places now gone and burying grounds

Four other post offices opened and closed inside today’s town.

Erwinna
1807–today
Ottsville
1813–today
Mattsville
1828–1839
Uhlerstown
1871–1935
Tinicum
1884–1958
Sundale
1894–1916
18001910today
Hamlets and corners on the map
Clay RidgeErwinnaEverbreeze PlateauJugtownLodiOttsvilleSmithtownSundaleTinicumUhlerstown
Gone or out of use
Clay Ridge SchoolschoolErkes AirportairportHaney AirportairportRock Ridge SchoolschoolSullivan AirportairportUnion Schoolschool
8cemeteries and burying grounds inside Tinicum Township
Erwin FamilyHillpotLower Tinicum UnionMarshall - Cooper - RidgePoint Pleasant Baptist ChurchRed Hill Saint Lukes United Church of ChristRock Ridge ChapelUpper Tinicum

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Help out

Start Tinicum Township’s collection

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

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

Tinicum Township on the map, 1890 to 1997

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

Tinicum Township on the 1890 USGS mapTinicum Township on the 1943 USGS mapTinicum Township on the 1955 USGS mapTinicum Township on the 1968 USGS mapTinicum Township on the 1973 USGS mapTinicum Township on the 1997 USGS map1890Doylestown 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 Tinicum Township.

The story

How Tinicum Township came to be

From Wikipedia’s history of Tinicum Township.

Read it all →

The Red Hill Church and School, Ridge Valley Rural Historic District, and Lewis Summers Farm are listed on the National Register of Historic Places.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Tinicum Township, 1807 to 1890

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1807Post officeThe Erwinna post office opens
  3. 1813Post officeThe Ottsville post office opens
  4. 1828Post officeThe Mattsville post office opens
  5. 1839Post officeThe Mattsville post office closes
  6. 1856In the archiveLazaretto, Philada. quarantine station May 11th 56
  7. 1877BuiltBridge in Tinicum Township is built
  8. 1890On the mapFirst mapped by the U.S. Geological Survey
By decade

Tinicum Township, decade by decade

One decade in the archive so far: the 1850s. Scroll each row; tap a photo for its story.

Then & now

Stand where they stood

No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.

Lazaretto, Philada. quarantine station May 11th 56
Retake this viewLazaretto, Philada. quarantine station May 11th 56, 1856

Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Tinicum Township’s page.

Retake this view · +15
On the National Register

11 listings protect 127 historic buildings

The country’s official list of buildings and places worth saving.

places listed
11
National Historic Landmarks
0
none yet
historic buildings protected
127
each building in a district counts
first listed
1978
Red Hill Church and School
All 11 listings

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

People over time

Tinicum Township, census by census

05001,0001,5002,0002,5003,0003,5004,0004,50019401960198020002020Peak: 4,206

Between 1,330 and 4,206 people in every census since 1930.

10 censuses, 1930–2020.

U.S. Census Bureau decennial counts, from the census table on Tinicum Township’s Wikipedia page.

Famous people

Famous people close to Tinicum Township

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

See all →
Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Questions about Tinicum Township’s history

What year was Tinicum Township founded?

The Tinicum Township post office opened in 1884, the earliest record of the town by name (U.S. post office records).

How does Tinicum Township rank for history?

Tinicum Township is more historic than 81% of U.S. towns, #310 of 1,035 in Pennsylvania. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.

What is on the National Register in Tinicum Township?

11 listings: 6 buildings, among them the Red Hill Church and School (listed 1978, the first), 2 historic districts, the Ridge Valley Rural Historic District and the Uhlerstown Historic District, with 107 contributing buildings, and 3 structures. 127 historic buildings in all.

How old are the homes in Tinicum Township?

25% of Tinicum Township’s homes were built before 1940 (Census estimate, ±7.8 points), against a typical 18% for a Pennsylvania town; the median home was built in 1972.

Memory lane

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

Town Square →
Start a conversation
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).

From the Library of Congress (1), the National Register of Historic Places (11), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.