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History · Harmony Township

65% of Harmony Township’s homes were built before 1940

Below: maps from 1933 on and the census since 1860.

0on the National Register
65%homes built before 1940
Add an old photoShare a memory
Photo: User:Visviva · CC BY-SA 4.0

What stands out about Harmony Township’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 Harmony Township are in the public archives yet. The rest are in attics and albums.Old housesHalf of Harmony Township’s homes were built before 1938.Boom and bustPeaked at 1,457 in 1870; 288 people lived here in 2020.
★ What stands out · Help out

Start Harmony Township’s collection

The first neighbors to add old photos shape how Harmony Township’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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The story so far

Harmony Township, in brief

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

Harmony Township is one of twenty-four townships in Hancock County, Illinois, USA. As of the 2020 census, its population was 288 and it contained 153 housing units. It was formed from Carthage and Chili townships on September 12, 1854.

Between the 2010 and 2020 censuses its population fell from 326 to 288 (-12%).

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

People over time

Harmony Township, census by census

02004006008001,0001,2001,4001,600190019502000Peak: 1,457

Peaked at 1,457 in 1870; 288 people lived here in 2020.

17 censuses, 1860–2020.

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

Timeline

Harmony Township, 1863 to 1974

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

  1. 19th century
  2. 1863Post officeThe Denver post office opens
  3. 1870CensusPopulation peaks at 1,457
  4. 20th century
  5. 1933On the mapFirst mapped by the U.S. Geological Survey
  6. 1974Post officeThe Denver post office closes
By decade

Harmony Township, decade by decade

Today1 recent
Harmony Township building 2026-08-292026Harmony Township building 2026-08-29
On the map

Harmony Township on the map, 1933 to 1974

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

Harmony Township on the 1933 USGS mapHarmony Township on the 1974 USGS map1933Carthage 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 Harmony Township.

Famous people

Famous people close to Harmony Township

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

See all →
Adelaide JohnsonAmerican sculptor · b. 1859
Edmond H. MadisonAmerican politician · b. 1865
James Arthur BairdAmerican football player and coach, basketball … · b. 1877
Robert Wilson McClaughryWarden and Superintendent of Chicago Police · b. 1839
Places that used to be

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

Another post office, Denver, opened and closed inside today’s town.

Hamlets and corners on the map
Denver
Gone or out of use
Denver Post Officepost officeDouglas SchoolschoolHarmony SchoolschoolIndependence SchoolschoolLiberty SchoolschoolMabry Landing StripairportMount Pleasant SchoolschoolPleasant Valley Schoolschool
8cemeteries and burying grounds inside Harmony Township
BrowningDenverGroveHarmonyImmanuel LutheranMount PleasantRamseyScott

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

Stories next door

History across the town line

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

St. Mary TownshipIts storynot graded: under 1,000 residents or part of its townChili TownshipIts storynot graded: under 1,000 residents or part of its townCarthage Township2 historic placesABear Creek TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Harmony Township’s history

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 Wikimedia Commons (1), 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.