Comparing the walkability, population density, and low income percentage of block groups in Chicago
Overall, Chicago is a very walkable city. Its downtown and surrounding areas are all near the top of the scale, while the further suburbs become less walkable. There is also a very close correlation between walkability and population density, while there is a strong negative correlation between low income percentage and walkability. This could be due to more walkable areas being more livable, therefore attracting those who can afford it to these more desirable locations. It is also noteworthy that despite Chicago's cold weather, many people choose to live in areas where they can walk outdoors.
Comparing the walkability, population density, and low income percentage of block groups in Chicago
San Francisco is extremely walkable in both its core at the tip of the peninsula and surrounding suburbs, such as Berkeley. The highest concentration of people live downtown, which is also where the lowest percentage of low income households are. In the very pricy housing market of San Francisco, it seems that walkable areas are a factor in increasing the prices of homes. In addition, a noticable increase in low income percentage can be observed as distance from the city increases and walkability decrease.
Comparing the walkability, population density, and low income percentage of block groups in Los Angeles
Again, there is a strong correlation between population density and walkability, making this perhaps the biggest factor in determining how walkable an area can be. Additionally, Los Angeles seems to have walkable areas extend beyond the areas of highest density. This could be explained by warmer weather. While cold weather does not seem to be much of a factor in hindering walkability, warm weather may allow it to increase even more. Los Angeles also has areas of low income which are still walkable, which again may be explained by the weather.
Comparing the walkability, population density, and low income percentage of block groups in Minneapolis
Minneapolis differs from previous examples in that the highest concentrations of low income are located in the core of the city. This also happens to be where the highest population density and walkability scores are. Minneapolis is one of the coldest cities in the US, so people may prefer to commute from the suburbs if they are able to. Another explanation could be that since Minneapolis is smaller that Chicago or San Francisco, it's downtown may have less to do or be less desirable to live in, making the suburbs the place people choose to move to if they can afford it.
Comparing the walkability, population density, and low income percentage of block groups in Atlanta
Atlanta returns to the trend of a negative correlation between walkability and low income percentage, particularly in the city core. However, Atlanta overall does not have a very dense population. Its warm weather may explain this disparity. People may wish to be able to walk within their communities whenever possible, but still drive to further places. Additionally, Atlanta is a target for many transplants from places such as California, where, as seen in the Los Angeles and San Francisco example, has a high level of walkability which people may be used to.