|Area||1.04 sq mi (3 km2)|
|- land||1.04 sq mi (3 km2)|
|- water||0.00 sq mi (0 km2)|
|Density||454.8 / sq mi (176 / km2)|
|- summer (DST)||CDT (UTC-5)|
|Wikimedia Commons: Neponset, Illinois|
The community was established in 1855 when the newly completed Central Military Tract Railroad (later renamed the Chicago, Burlington & Quincy Railroad) built a station there. Soon afterward, the U.S. Post Office was moved to Neponset from Brawby, a hamlet formerly located two miles north of the present village. The Village of Neponset, as a municipality, dates from 1864 when a charter of incorporation was granted by the Illinois General Assembly.
Neponset was named for the Massachusetts hometown of Myron Lee, the railroad's first agent at the Neponset station. One of the highest points (if not the highest point) between Chicago and the Mississippi River on the mainline of the Chicago, Burlington & Quincy Railroad (now the Burlington Northern Santa Fe) is just outside of Neponset.
Much of the farmland surrounding Neponset is currently devoted to production of corn and soybeans. In the late nineteenth and early twentieth centuries, Neponset was noted as a center of livestock production, particularly hogs. Hogs shipped from Neponset were noted by buyers in the Chicago livestock markets both for their numbers and superior quality, years before nearby Kewanee was proclaimed the "Hog Capital".
Neponset has one gas station. This was built within the last decade, and saves residents from having to drive to Kewanee for gas and items of convenience. This gas station composes a major portion of the Neponset business district. Other businesses are Martin Engineering and Lindbeck Auto Sales.
Neponset is located at (41.297222, -89.790246).
According to the 2010 census, the village has a total area of 1.04 square miles (2.7 km2), all land.
As of the census of 2000, there were 519 people, 200 households, and 146 families residing in the village. The population density was 498.0 people per square mile (192.7/km²). There were 222 housing units at an average density of 213.0 per square mile (82.4/km²). The racial makeup of the village was 99.47% White, 0.00% African American, 0.63% Asian, and 0.00% from two or more races. Hispanic or Latino of any race were 0.00% of the population.
There were 200 households out of which 28.5% had children under the age of 18 living with them, 63.0% were married couples living together, 6.0% had a female householder with no husband present, and 27.0% were non-families. 23.0% of all households were made up of individuals and 12.0% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.06.
In the village the population was spread out with 23.5% under the age of 18, 8.5% from 18 to 24, 26.2% from 25 to 44, 22.2% from 45 to 64, and 19.7% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 95.8 males. For every 100 females age 18 and over, there were 99.5 males.
The median income for a household in the village was $38,750, and the median income for a family was $45,000. Males had a median income of $30,139 versus $17,969 for females. The per capita income for the village was $19,846. About 8.6% of families and 11.9% of the population were below the poverty line, including 28.8% of those under age 18 and 10.5% of those age 65 or over.
- "Geographic Identifiers: 2010 Demographic Profile Data (G001): Neponset village, Illinois". U.S. Census Bureau, American Factfinder. Retrieved November 15, 2013.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "2010 Census U.S. Gazetteer Files for Places – Illinois". United States Census. Retrieved 2012-10-13.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.