The story
Read it all →How Chapin came to be
From Wikipedia’s history of Chapin.
Chapin was named for its founders, Charles and Horace Chapin.
Text from Wikipedia, licensed CC BY-SA 4.0.
–Not graded
History · Chapin
Chapin’s post office opened in 1861, and 47% of its homes were built before 1940
Below: maps from 1898 on and the census since 1880.
1861first post office
0on the National Register
47%homes built before 1940
Quick answers
How Chapin began
When was Chapin founded?
1861
The Chapin post office opened in 1861, the earliest record of the town by name.
First census: 223 in 18802020 census: 475165 years
Founding year: the first Chapin post office (Blevins & Helbock, CC0).The full story ↓
What stands out about Chapin’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 Chapin are in the public archives yet. The rest are in attics and albums.Boom and bustPeaked at 648 in 1980; 475 people lived here in 2020.Old housesHalf of Chapin’s homes were built before 1944.Mapped building by building3 fire insurance maps, 1898 to 1910, drew every building in Chapin.
★ What stands out · Help out
Start Chapin’s collection
The first neighbors to add old photos shape how Chapin’s history is told.
Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.People over time
Chapin, census by census
Peaked at 648 in 1980; 475 people lived here in 2020.
14 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Chapin’s Wikipedia page.
From the old history books
What they wrote about Chapin in 1878
Passages that mention Chapin, cut from the printed page as they were published.
History of Morgan county, Illinois1878 · page 430Read the page →
Read the text
roads, it is quite a shipping point; large quantities of grain being annually sent to market from here, and some live stock, though not so much as in former years. No better land is found in the county than that in the vicinity of Chapin. CONCORD Is situated in the northwestern part of the count}', on the Rockford, Rock Island and St. Louis Railroad. About 1844, members of the Congregational Church living in this part of the county, began to consider
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.
Timeline
Chapin, 1861 to 1980
Woven from the archive, old maps, post office records, the National Register and the people born here.
- 19th century
- 1861Post officeThe Chapin post office opens
- 20th century
- 1929
On the mapFirst mapped by the U.S. Geological Survey - 1980CensusPopulation peaks at 648
By decade
Chapin, decade by decade
Today1 recent
2006On the map
Chapin on the map, 1929 to 1983
Every edition of the U.S. Geological Survey’s map of Chapin. Tap a year, or press play to watch the town change.
1929Arenzville sheet · 1:62,500U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Chapin.
Every building
Chapin, building by building, 1898–1910
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
1898Sheet 1 of 2Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
Famous people
See all →Famous people close to Chapin
Nobody well known was born in Chapin itself, so here are the best known from just nearby.
Questions about Chapin’s history
What year was Chapin founded?
The Chapin post office opened in 1861, the earliest record of the town by name (U.S. post office records).
Memory lane
What the archives can’t tell you, neighbors can.
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). How TownRatings grades history →
From Wikimedia Commons (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System, Sanborn fire insurance maps (Library of Congress) 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.