Sparta’s post office opened in 1840, and 14% of its homes were built before 1940
More historic than 84% of U.S. towns · #139 of 768 in Illinois. What drives it
1 place in town is on the National Register, among them a historic district with 14 buildings. Below: 5 old photos and papers, maps from 1889 on, and the census since 1870.
The Sparta post office opened in 1840, the earliest record of the town by name. Another post office, Plumb Creek (1821), opened inside today’s city and later closed.
First census: 1,335 in 18702020 census: 4,095186 years
How historic is Sparta?
A−
More historic than 84% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Sparta post office (Blevins & Helbock, CC0).
History grade
What drives Sparta’s History grade
On its age, its old homes and the National Register, Sparta is more historic than 84% of U.S. towns, #139 of 768 in Illinois. All 3 inputs are above most U.S. towns; its National Register listings ranks highest and its share of homes from before 1940 lowest.
A−
HistoryA character grade: shown, never part of Sparta’s overall grade.
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 Sparta’s 34.4 sits above most of its state (90% of Illinois towns have fewer) while its 14 historic buildings outnumber those of 78% 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 (±5.7 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 Sparta’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
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.
Wikipedia doesn’t have a history of Sparta yet. The photos, dates and memories neighbors add here are how it gets written.
Sparta is a city in Randolph County, Illinois, United States. The population was 4,095 at the 2020 census. It has a total area of 11.443 square miles (29.64 km2), of which 11.17 square miles (28.93 km2) (or 97.61%) is land and 0.273 square miles (0.71 km2) (or 2.39%) is water. The city was the principal filming location for the 1967 film In the Heat of the Night.
Its first post office opened in 1840. Between the 2010 and 2020 censuses its population fell from 4,302 to 4,095 (-5%).
Intro from Wikipedia. Population: U.S. Census Bureau.
The Sparta post office opened in 1840, the earliest record of the town by name (U.S. post office records).
How does Sparta rank for history?
Sparta is more historic than 84% of U.S. towns, #139 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.
What is on the National Register in Sparta?
One place: the Sparta Historic District (listed 1982).
How old are the homes in Sparta?
14% of Sparta’s homes were built before 1940 (Census estimate, ±5.7 points), against a typical 11% for an Illinois town; the median home was built in 1970.
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 Wikimedia Commons (7), the Library of Congress (2), Wikidata (1), the National Register of Historic Places (1), Wikidata and Wikipedia for famous people, 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 and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.