Shelbyville is located at 39°24′29″N 88°47′59″W (39.408142, -88.799730).

According to the United States Census Bureau, the city has a total area of 3.9 square miles (10 km2), of which, 3.7 square miles (9.6 km2) of it is land and 0.2 square miles (0.52 km2) of it (4.90%) is water.

As of the census of 2010, there were 4,700 people, 2,093 households, and 1,345 families residing in the city of Shelbyville.

Property Income

• The median income for a household in the city was $32,458
• The median income for a family was $39,205
• Males had a median income of $31,477 versus $18,710 for females.
• The per capita income for the city was $17,596.

About 6.2% of families and 9.9% of the population were below the poverty line, including 10.2% of those under age 18 and 13.8% of those age 65 or over.

In the city the population was spread out with:

• Population density: 1205.13 people per square mile (3121.27/km²).
  
• There were 2,308 housing units at an average density of 619.9 per square mile (239.1/km²)

 

• 23.0% under the age of 18
• 8.3% from 18 to 24, 25.3% from 25 to 44
• 21.5% from 45 to 64
• 21.9% who were 65 years of age or older.
• The median age was 40 years.
• For every 100 females there were 91.2 males.