Ask Cityscape: Where do your “neighborhood” maps come from?

Published on Aug. 23, 2017 by Steven Vance


What’s the difference between Logan Square the community area and Logan Square the neighborhood? Read on!

When you’re searching for a neighborhood name, like “Logan Square” or “Englewood”, you’ll sometimes find two of them: One is labeled a community area and the other a neighborhood. Other times you’ll see only one or the other.

Try searching for Bronzeville and you’ll get only a single result, a neighborhood. Some people have asked us who drew that boundary and whether it’s official.

Bronzeville is a particularly interesting case because there are different maps that show it covering differing blocks.

Community areas are official. Their names and boundaries do not change, and organizations, including the City of Chicago and DePaul Institute for Housing Studies, use their boundaries for analysis 📊 and reporting. For example, the IHS provides all of its housing, property transactions, and foreclosures data aggregated to the 77 community areas.

And there is no Bronzeville community area.

Neighborhood maps come from an interesting survey

The City of Chicago drew all 228 of our neighborhood maps. How did the city know or decide where to draw the lines between neighborhoods?

They asked the residents, in 1978. A map that the city produced in 2006 describes the method:

The names and boundaries of neighbrohoods on this map were based upon a field survey conducted by the Department of Planning, in 1978. The survey asked "What is the name of this neighborhood?" and "What are the boun- daries?" Within each of Chicago's neighborhoods, approximately ten residents were selected at random for interviewing. These are unofficial neighborhood names and boundaries.

It’s not an official map, even though the map says it was adopted by City Council in 1993. It doesn’t cover the entire city, and it has been changed since then. Community areas cover 100 percent of Chicago.

Our neighborhoods map was downloaded from the city’s website in 2012, since removed, and has an area called Bronzeville, but the 2006/1993 map calls that (very small) area “South Side”. 🤷🏻‍♀️

The city’s website now publishes a different neighborhoods map developed by the city’s tourism office. This map doesn’t have a Bronzeville, and is more like a modified community areas map than a neighborhoods map. It shows “Bronzeville” as a secondary neighborhood under the community areas of Douglas and Oakland.

The West Englewood community area is the larger area in pink, and the West Englewood neighborhood is the smaller green area with the squiggly line. Their overlap is a darker shade in the middle.

Going back to my examples of neighborhoods having the same names as official community areas, know that they often don’t have the same boundary or shape!

👈🏽 Look at the map of West Englewood. The neighborhood map is smaller than the community area map, and about half its size.


If you are doing data analysis in Chicago we recommend you use community areas as your basis, because it’s an agreed-upon map and won’t change (well, it’s possible, as it’s changed twice: first to add O’Hare airport, and second to split Edgewater from Uptown).

But just because it’s agreed-upon doesn’t mean its the best design or that everyone is okay with it. The Encyclopedia of Chicago talks about some of the criticism:

Despite the uses scholars and planners have found for the concept of community areas, they do not necessarily represent how Chicagoans think about their city. Scholars have challenged the validity of the idea of “natural areas” since its inception. Prominent neighborhoods such as Pilsen and Back of the Yards are subsumed into the less familiar Lower West Side and New City [now the name of a mixed-use mall and residential building 10 miles away]. And the virtue of the community areas, their stability, means that they cannot accommodate transformations in the geography of Chicago, such as the mid-twentieth-century expressways that cut through once-coherent neighborhoods.

What’s next?

Search through all of our maps on Maps Explorer to find the one that best fits the area you’re looking to survey or analyze. If it doesn’t exist you can draw it as one of your Personal Places. As always, contact us if you want help finding or drawing a map!

If you’re a Pro member then you can download all of our maps. Not a Pro member? Start a free trial instantly, no credit card needed.


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Great idea, Erik!

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