Northlake is a somewhat small city located in the state of Illinois. With a population of 12,401 people and five associated neighborhoods, Northlake is the 187th largest community in Illinois.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 7.96% of the workforce. While this number may seem small overall, as a fraction of the total workforce this is high compared to the rest of the county. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The percentage of adults in Northlake with college degrees is slightly lower than the national average of 21.84% for all communities. 15.55% of adults in Northlake have a bachelor's degree or advanced degree.

The per capita income in Northlake in 2022 was $28,950, which is lower middle income relative to Illinois and the nation. This equates to an annual income of $115,800 for a family of four. However, Northlake contains both very wealthy and poor people as well.

Northlake is an extremely ethnically-diverse city. The people who call Northlake home describe themselves as belonging to a variety of racial and ethnic groups. People of Hispanic or Latino origin are the most prevalent group in Northlake, accounting for 60.81% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Northlake residents report their race to be White, followed by Black or African-American. Important ancestries of people in Northlake include German, Polish, Irish, Italian, and English.

Foreign born people are also an important part of Northlake's cultural character, accounting for 29.68% of the city’s population.

The most common language spoken in Northlake is Spanish. Other important languages spoken here include English and Polish.