Half of Polk Township’s homes were built after 1994
More historic than 23% of U.S. towns · #524 of 593 in Indiana. What drives it
Most of Polk Township was built recently: 8% of its homes predate 1940 and the median home dates from 1994. Below: maps from 1955 on and the census since 1890.
On its age, its old homes and the National Register, Polk Township is more historic than 23% of U.S. towns, #524 of 593 in Indiana. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C−
HistoryA character grade: shown, never part of Polk Township’s overall grade.
Indiana towns list more on the Register than most of the country (a typical Indiana town has 7.9 per 10,000 residents, the U.S. 2.4), so Polk Township’s 0.0 sits below most of its state (22% of Indiana towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share is a Census survey estimate (±4.6 points).
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 →
What stands out about Polk Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lost post offices, old corners, places now gone and burying grounds
Two other post offices opened and closed inside today’s town.
Blue River
1873–1904
Bartle
1880–1906
18701950today
Hamlets and corners on the map
BartleBlue RiverDaisy HillOld Pekin
Gone or out of use
New Liberty Fieldairport
2cemeteries and burying grounds inside Polk Township
MeadSwayback
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
Polk Township, in brief
Wikipedia doesn’t have a history of Polk Township yet. The photos, dates and memories neighbors add here are how it gets written.
Polk Township is one of thirteen townships in Washington County, Indiana, United States. As of the 2020 census, its population was 2,708 and it contained 1,084 housing units.
Between the 2010 and 2020 censuses its population grew from 2,626 to 2,708 (+3%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Polk Township, 1873 to 1955
Woven from the archive, old maps, post office records, the National Register and the people born here.
The U.S. Geological Survey’s map of Polk Township.
1955South Boston sheet · 1:24,000
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Polk Township.
People over time
Polk Township, census by census
Grew from 919 people in 1890 to 2,708 in 2020.
14 censuses, 1890–2020.
U.S. Census Bureau decennial counts, from the census table on Polk Township’s Wikipedia page.
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
Polk Township is more historic than 23% of U.S. towns, #524 of 593 in Indiana. 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.
How old are the homes in Polk Township?
8% of Polk Township’s homes were built before 1940 (Census estimate, ±4.6 points), against a typical 14% for an Indiana town; the median home was built in 1994.
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 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.