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History · Mexico

Mexico’s post office opened in 1815, and 22% of its homes were built before 1940

Below: maps from 1934 on and old-book passages.

1815first post office
0on the National Register
22%homes built before 1940
Photo: Dincher · CC BY-SA 3.0
Quick answers

How Mexico began

When was Mexico founded?

1815

The Mexico post office opened in 1815, the earliest record of the town by name.

2020 census: 398211 years
Founding year: the first Mexico post office (Blevins & Helbock, CC0).

What stands out about Mexico’s past

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

★ What stands out · Help out

Start Mexico’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
The story so far

Mexico, in brief

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

Mexico is an unincorporated community and census-designated place (CDP) in Walker Township, Juniata County, Pennsylvania, United States. The population was 472 at the time of the 2010 census.

Its first post office opened in 1815. Between the 2010 and 2020 censuses its population fell from 472 to 398 (-16%).

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

From the old history books

What they wrote about Mexico in 1830

Passages that mention Mexico, cut from the printed page as they were published.

individuals may consider themselves as whites (que se tengnn por hluncos):\ Of all the European colonies under the torrid zone, Mexico is the country in which there are the fewest negroes. u One may go through the whole city of Mexico,” says Humboldt, “ without seeing a single black. In this point …
Vol. 11830 · page 200Read the page →
Read the text

individuals may consider themselves as whites (que se tengnn por hluncos):\ Of all the European colonies under the torrid zone, Mexico is the country in which there are the fewest negroes. u One may go through the whole city of Mexico,” says Humboldt, “ without seeing a single black. In this point of view, Mexico presents a striking contrast to the Havannah, Lima, and the

Text read by machine from the scan; it may contain errors.
it was probably a temple or some other building : report says, a statue covered with gold. We rested some time on the summit, enjoying one of the finest pros¬ pects imaginable, in which the city of Mexico is in¬ cluded. Here I found fragments of small statues and earthenware, and, what surprised me…
Vol. 11830 · page 318Read the page →
Read the text

it was probably a temple or some other building : report says, a statue covered with gold. We rested some time on the summit, enjoying one of the finest pros¬ pects imaginable, in which the city of Mexico is in¬ cluded. Here I found fragments of small statues and earthenware, and, what surprised me more, oystershells, the first that I had seen in Mexico: they are a new species, and I have brought specimens home. In

Text read by machine from the scan; it may contain errors.

Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.

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.

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On the map

Mexico on the map, 1934 to 1977

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

Mexico on the 1934 USGS mapMexico on the 1959 USGS mapMexico on the 1969 USGS mapMexico on the 1977 USGS map1934Mifflintown 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 Mexico.

Famous people

Famous people close to Mexico

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

See all →

Questions about Mexico’s history

What year was Mexico founded?

The Mexico post office opened in 1815, 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 and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.