FAQ and sources - maps

December 2017

Q: What does one dot on the map mean?

A: One dot stands for three children who lived in a general area in 2010. It’s not a dot on their building or house. It’s a dot placed in the general area of where they lived — an area the U.S. Census calls a Block Group. Some of the dots even show up in streets and on stores, because they’re randomly placed anywhere in the Block Group by a computer program. 

So it’s not a map of where people lived, but it does give a good idea of the population density and racial mix of an area.

Q: Don’t you have any newer numbers? These kids have nearly grown up by now.

A: This data is old, but we used it for two reasons.

First, while there are newer population estimates, they have a high margin of error for small Census Block Groups. The 2010 U.S. Census numbers don't have that high margin of error.

Second, school zones have changed slowly.  Except for consolidations,  these are roughly the maps that have been in place for years.

Q: What are your sources?

A: The data to draw the dots comes from the 2010 U.S. Census count of population by age for Bibb County’s Census tracts.

It’s accessible via the U.S. Census American Factfinder, tables P12A, P12B, P12C, P12D, P12E, P12F and P12G from the year 2010. Those all files show how many people lived in each Block Group, broken down by age, sex and race.

About 94 percent of Bibb students in the elementary school ages (5 to 9) and high school ages (15 to 17) were either black alone or white alone. 

The Census also counts up folks who are other races or who are multiracial, but there were so few students from those categories that we added them all up together: “other race or multiracial.”

  5-9 years old 15-17 years old

 African-American or black alone 6,775 4,394
 White alone 3,392 2,166
 American Indian or Alaska Native alone 21 13
 Asian alone 216 83
Native Hawaiian or other Pacific Islander alone 11 2
 Some other race alone 211 100
 Two or more races in combination 305 132

Note: the 2010 Census did not count “Hispanic” or “Latino” as a race. Those were defined as a person of Cuban, Mexican, Puerto Rican, South or Central American or other Spanish culture or origin regardless of race. 

A total 432 Bibb children aged 5 to 9 and 194 children aged 15 to 17 were identified as Hispanic in 2010. Those children could be counted in any of the race categories above.

Other questions? Please email the author, Maggie Lee at mlee@macon.com