Each edition grades its towns against each other only.
More historic than 13% of U.S. towns · #710 of 768 in Illinois. What drives it
Most of Markham was built recently: 6% of its homes predate 1940 and the median home dates from 1964. Below: maps from 1892 on and the census since 1930.
Markham dates its founding to 1925 (Wikidata and Wikipedia’s history agree). The census first counted it in 1930.
More historic than 13% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Markham is more historic than 13% of U.S. towns, #710 of 768 in Illinois. Its share of homes from before 1940 holds the grade up; its age pulls it down.
Few Illinois towns list much on the Register (a typical Illinois town has 0.5 per 10,000 residents, the U.S. 2.4), so Markham’s 0.0 sits below most of its state (28% of Illinois towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Founding year: Wikidata (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 →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Markham’s history is told.
Every edition of the U.S. Geological Survey’s map of Markham. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Markham.
Peaked at 15,987 in 1970; 11,661 people lived here in 2020.
10 censuses, 1930–2020.
U.S. Census Bureau decennial counts, from the census table on Markham’s Wikipedia page.
From Wikipedia’s history of Markham.
It is claimed this area was beach 10,000 years ago. After countless ages of geologic swamps, marshes and sloughs, the prairies dominated the landscape with groves of trees, flowers, and wildlife in abundance.
Text from Wikipedia, licensed CC BY-SA 4.0.
Woven from the archive, old maps, post office records, the National Register and the people born here.
On the mapFirst mapped by the U.S. Geological Survey
Born hereRodney Harrison is born here
Born hereTricky Stewart is born hereWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Writers, athletes, leaders and more, ranked by how widely they’re known.
Old hamlets and crossroads still carry their names on the map.
Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
In 1925, according to Wikidata and Wikipedia’s history of the town. the census of 1930 counted 349 people here.
Markham is more historic than 13% of U.S. towns, #710 of 768 in Illinois. 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.
6% of Markham’s homes were built before 1940 (Census estimate, ±3.0 points), against a typical 11% for an Illinois town; the median home was built in 1964.
What the archives can’t tell you, neighbors can.
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 Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.
