Oak Grove is a somewhat small city located in the state of Kentucky. With a population of 7,997 people and two associated neighborhoods, Oak Grove is the 54th largest community in Kentucky. Oak Grove has seen a significant amount of newer housing growth in recent years. Quite often, new home construction is the result of new residents moving in who are middle class or wealthier, attracted by jobs, a healthy local economy, or other amenities as they leave nearby or far away areas for greener pastures. This seems to be the case in Oak Grove, where the median household income is $40,740.00.

Oak Grove is a military town: the armed forces employs 15.90% of the workforce, making the military a major focus of life in the city. In the civilian sector, Manufacturing and Retail are important in the local economy and are the city’s largest civilian employers, employing 23.09% and 19.69% of the civilian workforce respectively.

Oak Grove is a small city, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

In Oak Grove, just 12.67% of people have at least a bachelor's degree, which is quite a bit lower than the national average for cities and towns of 21.84%.

The per capita income in Oak Grove in 2018 was $19,918, which is lower middle income relative to Kentucky, and low income relative to the rest of the US. This equates to an annual income of $79,672 for a family of four. However, Oak Grove contains both very wealthy and poor people as well.

Oak Grove is an extremely ethnically-diverse city. The people who call Oak Grove home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Oak Grove residents report their race to be White, followed by Black or African-American. Oak Grove also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 13.97% of the city’s residents. Important ancestries of people in Oak Grove include German, Irish, Italian, English, and European.

The most common language spoken in Oak Grove is English. Other important languages spoken here include Spanish and Italian.