Census Data for North Chicago ...
The most recent Census Estimate<1> was for 2019 and it gave North Chicago a population of 29,775 people.
The last Decennial Census<2> was in 2010, which gave North Chicago a population of 32,574 people.
The city of North Chicago is located in Lake County. The 2010 Census gave Lake County; a population of 703,462 people. This means that North Chicago had 4.63% of the county's total population, making it Lake's 3rd most populous community.
At the same time, Illinois had a population of 12,830,632 people, meaning that North Chicago had 0.25% of the total population of Illinois - making it the state's 60th most populous community.
The 2010 Census shows that the sampling area for North Chicago has a total area of 7.91 square miles [20.5 km²]. Of this total, a small amount of the area is covered by water (0.01 square miles [0 km²]).
Lake County has a land area of 443.7 square miles [1,149.1 km²]. At 7.9 square miles [20.5 km²], North Chicago has 1.78% of the county's total land area.
- Continue Reading ...
- When the Census Bureau conducts a census for a city like North Chicago, they draw a boundary around the area in which they are going to conduct their count - this defines the sampling area (usually a polygon). The shape of the sampling area can be quite complex and it's important to keep in mind that the boundaries of the sampling area may or may not match the recognized boundaries of the city.
- Things like population, area and housing for North Chicago reflect the sampling area. Since the shape of the sampling area and the actual boundaries of North Chicago might be different, it's best to check with the U.S. Census Bureau to resolve any difference between the two.
- Not only does the sampling area define boundaries, it also has a GPS location (latitude & longitude) that indicates a point within the sampling area (usually the center of the polygon, known as the centroid). At the time of the 2010 Census, the sampling area was located at:
- Lat: 42° 19' 0" (or 42.32°)
- Lon: -87° 51' 33" (or -87.86°)
- More information on this topic and the changes between the 2000 Census and the 2010 Census can be found in the section for our Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, North Chicago had 7,745 Housing Units<3> and with its population of 32,574 people, this averages 4.21 people per Housing Unit.
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- The 2010 Census shows North Chicago had a land area of 7.9 square miles [20.5 km²]. This translates to 978 Housing Units per square mile [377.9 housing units/km²].
- From the Census of 2000: North Chicago had 8,377 Housing Units, a population of 35,918 people and a land area of 7.83 square miles [20.3 km²]. This gives a density of 4.29 people per Housing Unit and 1,067 Housing Units per square mile [412.3 housing units/km²].
- Note: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2010 Census and the 2000 Census, there were changes in the sampling area for North Chicago and you need to be careful when comparing between the censuses. More information about the nature of these the changes can be found in the section called Census-to-Census Observations ... (see below).
Lake County ...
North Chicago is located in Lake County<4>.
The county had a population of 703,462 people at the 2010 Census. With it's population of 32,574 people, North Chicago represented 4.63% of the county's total.
In addition, where the city of North Chicago has a population density of 4,115 people per square mile [1,589 people/km²], Lake County averages 1,585 people per square mile [612 people/km²].
For more information, please visit our Census Page for Lake County.
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for North Chicago, they start by specifying the boundaries of the area to be counted. This area (or sampling area) is a polygon and its shape can be quite complex - it may or may not match the geographical boundaries of North Chicago. It's important to note that from one Census to the next, the shape and location of the polygon can change.
- Continue Reading ...
- Although we don't have specific information about the shape of the polygon for North Chicago or how it changed has over time, there is some information that can give us some hints. For example, since the shape of the sampling area is directly related to the shape of the polygon, any change to area probably indicates a new shape for the polygon.
- If you need precision or details about the methodology of the Census, you should visit the U.S. Census Bureau for a definitive answer.
While generally coinciding with the GPS location (latitude/longitude) of North Chicago, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for North Chicago.
- Continue Reading ...
- For the 2010 Census, the location was given as:
- Lat: 42.316696° (or 42°19'0" N)
- Lon: -87.859201° (or -87°51'33" W)
- For the 2000 Census, the location given was:
- Lat: 42.322272° (or 42°19'20" N)
- Lon: -87.854470° (or -87°51'16" W)
- The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 2,399 feet to the southwest<5> of the location that was used in the 2000 Census.
- The U.S. Geological Survey (USGS) and the U.S. Board on Geographic Names (BGN) have assigned a unique GNIS identifier (#2395253) to North Chicago. This identifier also marks a GPS point on the map, and that point lies within the boundaries of North Chicago. The GNIS point has been mapped to the latitude/longitude:
- Lat: 42.317383° (or 42°19'2" N)
- Lon: -87.859419° (or -87°51'33" W)
- The GPS location given for the 2010 Census lies 257.3 feet to the south<6> of the point given by the GNIS for North Chicago. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for North Chicago.
Miscellaneous Information for North Chicago ...
The Federal government has assigned various identifying codes to each community, county and state. At one time or another, the US Census Bureau has used one (or more) of the following identifiers when referring to either Lake County or the city of North Chicago:
- The GNIS Codes ...
- The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to North Chicago:
- GNIS ID for North Chicago: 2395253
- GNIS ID for Lake County: 1784796
- GNIS ID for State of Illinois: 1779784
- Misc. Census Codes ...
- North Chicago is located in Census Region #2 (the Midwest Region) and Division #3 (the East North-Central Division).
- The US Postal Service ZIP Code ...
- While some people have used ZIP codes to identify a community, the ZIP codes were actually created to make mail delivery more efficient by grouping addresses together. Although a ZIP Code doesn't specifically identify a city like North Chicago, they do identify addresses that are in (or near) the city. It's important to remember that the boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes.
- Our list of ZIP codes for North Chicago:<7>
- & .
- Census ZCTA Codes ...
- The US Census Bureau created statistical entities that they call ZIP Code Tabulation Areas (ZCTAs) and these ZCTAs are frequently confused with the ZIP codes that come from the US Postal Service (USPS).
- ZCTAs were first created for the 2000 Census and at that time, they were based upon the USPS ZIP codes. While largely covering the same areas, the boundaries of a ZCTA do not necessarily match the boundaries of a postal ZIP code with the same number. For example, while a postal ZIP code can cross a county or state line, a Census ZCTA can not. They should be treated as separate entities with no correlation between them.
For more information about the various Federal identification codes, please visit our Misc Page for North Chicago.
Other Roadside Stops ...
Search for a Community located in Illinois
About Lake County
Off-the-Road Links ...
The official website for North Chicago: www.northchicago.org/
The official website for Lake County: www.co.lake.il.us
The official website for State of Illinois: https://illinois.gov
The official website of the U.S. Census Bureau
The official website of the U.S. Board on Geographic Names (BGN)
The official website of the U.S. Geological Survey (USGS)
|<1>||Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019.|
|<2>||Every 10 years (eg- 1990, 2000, 2010), the US Census Bureau conducts a Constitutionally-mandated count (or enumeration) of people living within the United States. This count is called a Decennial Census. The last Decennial Census was the 2010 Census, with the next one planned for 2020.|
|<3>||A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).|
|<4>||If you're interested in how the shape of Illinois' counties, including Lake, have changed over time, we recommend the Atlas of Historical County Boundaries.|
|<5>||The calculated bearing (or angle) to the 2010 Census location is 147 degrees and a distance of 2,399 feet.|
|<6>||The calculated bearing (or angle) to the GNIS point is 193 degrees and a distance of 257.3 feet.|
|<7>||When looking for a ZIP Code, whether North Chicago or elsewhere, it's always best to check the website of the United States Postal Service (USPS).|