Each edition grades its towns against each other only.
More historic than 51% of U.S. towns. What drives it
Below: 2 old photos and papers, maps from 1892 on, and the census since 1910.
More historic than 51% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Rockdale is more historic than 51% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull 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 Rockdale’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: our sources. 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 Rockdale’s history is told.
Every edition of the U.S. Geological Survey’s map of Rockdale. 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 Rockdale.
Wikipedia doesn’t have a history of Rockdale yet. The photos, dates and memories neighbors add here are how it gets written.
Rockdale is a village in Will County, Illinois, United States. As of the 2020 census, Rockdale had a population of 2,012.
Its population held steady between the last two censuses: 1,976 in 2010, 2,012 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Rockdale’s page.
Retake this view · +15Between 1,101 and 2,015 people in every census since 1910.
12 censuses, 1910–2020.
U.S. Census Bureau decennial counts, from the census table on Rockdale’s Wikipedia page.
Nobody well known was born in Rockdale itself, so here are the best known from just nearby.
Each neighbor’s History grade, on the same three inputs.
Rockdale is more historic than 51% of U.S. towns. 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.
23% of Rockdale’s homes were built before 1940 (Census estimate, ±5.9 points), against a typical 11% for an Illinois town; the median home was built in 1953.
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 the Library of Congress (2), 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.
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