|Townships||Fox, Mission, Northville|
|Area||0.74 sq mi (2 km2)|
|- land||0.69 sq mi (2 km2)|
|- water||0.06 sq mi (0 km2)|
|Density||822.8 / sq mi (318 / km2)|
|- summer (DST)||CDT (UTC-5)|
|Wikimedia Commons: Millington, Illinois|
The Kendall County portion of Millington is part of the Chicago–Naperville–Joliet Metropolitan Statistical Area, while the LaSalle County portion is part of the Ottawa–Streator Micropolitan Statistical Area.
Millington is located at  The village is situated along the boundary between Kendall and LaSalle counties. In the 2000 census, 286 of Millington's 458 residents (62.4%) lived in Kendall County and 172 (37.6%) lived in LaSalle County..
According to the 2010 census, Millington has a total area of 0.745 square miles (1.93 km2), of which 0.69 square miles (1.79 km2) (or 92.62%) is land and 0.055 square miles (0.14 km2) (or 7.38%) is water.
The actual boundary line of the counties is not clearly defined in town, although a road farther south, named "Sandhill Road" in Kendall County and "N. 4201 Rd." in LaSalle County clearly shows the county line, especially in the winter, as LaSalle County is slower in plowing the road, while the Kendall County portion is somewhat clear.
As of the census of 2000, there were 458 people, 149 households, and 123 families residing in the village. The population density was 822.8 people per square mile (315.8/km²). There were 153 housing units at an average density of 274.9 per square mile (105.5/km²). The racial makeup of the village was 98.25% White, 0.66% African American, 0.44% Asian, and 0.66% from two or more races. Hispanic or Latino of any race were 3.28% of the population.
There were 149 households out of which 42.3% had children under the age of 18 living with them, 71.1% were married couples living together, 7.4% had a female householder with no husband present, and 16.8% were non-families. 13.4% of all households were made up of individuals and 2.7% had someone living alone who was 65 years of age or older. The average household size was 3.07 and the average family size was 3.37.
In the village the population was spread out with 31.2% under the age of 18, 10.7% from 18 to 24, 26.6% from 25 to 44, 21.4% from 45 to 64, and 10.0% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 116.0 males. For every 100 females age 18 and over, there were 108.6 males.
The median income for a household in the village was $43,583, and the median income for a family was $43,229. Males had a median income of $36,944 versus $25,208 for females. The per capita income for the village was $13,898. About 8.7% of families and 10.4% of the population were below the poverty line, including 15.7% of those under age 18 and 8.0% of those age 65 or over.
The community is served by the Newark Fire Department, the Kendall County Sheriff's Department (through the Newark Police), the Sheridan Volunteer Fire Protection District (for Ambulance Service).
The community is also served by Newark School District, (south of Pine Street in the community), Sandwich District 430 (North side of Pine Street to the border with LaSalle County and North of the Fox River), and Community District School District #2 (west of the LaSalle County Line, and South of the Fox River).
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The town's motto was recently changed a few years ago to "Along the Fox" and this phrase was displayed on a welcome sign on either side of town on Church Street and Millington Road. The signs have since been taken down due to significant fading, and they have been replaced with metallic signs that simply announce that you have entered the town.
The graveyard is vast and populated with over 3,000 people. Most remarkably is a Revolutionary War veteran on the north side. The whole graveyard is stamped with the images of time and meaning specific to Fox Valley. The cemetery itself is simply located at the top of the Church Street Hill, right as you enter the town, if you are driving north from Newark, IL. It is named simply "Millington-Newark Cemetery". There is a small chapel on the south side. There are also many remarkable graves. If you take the time to investigate, you will see many families of prestige buried there. Also, you will see many, many abandoned graves. Sometimes, in the early spring, you may see some pretty flowers growing around long-forgotten graves waving in the breeze. These are the seeds buried long ago by Millington children in mourning for those long forgotten.
The town boasts a few local businesses including Last Chance Saloon, Millington Auto, and Fox Paintball. It also has its own post office and park. The town park sits on land that once surrounded the operating school. Now this building is used as the town hall where town meetings take place along with other public events. In the past few years, Millington has expanded across the Fox River. Belle Riv subdivision is home to several homes.
The town used to have a theme song that would be sung in elementary school: "The potatoes they grow small in Millington. The potatoes they grow small in Millington. The potatoes they grow small and we pick them in the fall. Oh, the potatoes they grow small in Millington." They also used to sing another song in school called "The Sunny Always Shines in Millington."
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "Subcounty population estimates 2000-2006: Illinois" (CSV). United States Census Bureau, Population Division. 2007-06-28. Retrieved 2008-06-03.
- "G001 - Geographic Identifiers - 2010 Census Summary File 1". United States Census Bureau. Retrieved 2015-12-19.
- "Annual Estimates of the Resident Population for Incorporated Places: April 1, 2010 to July 1, 2015". Retrieved July 2, 2016.
- "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.