diff --git a/urbanization-index/README.md b/urbanization-index/README.md
index 6ba6958..9a7d297 100644
--- a/urbanization-index/README.md
+++ b/urbanization-index/README.md
@@ -16,7 +16,7 @@ Column | Description
 `state` | Name of state
 `gisjoin` | [Geographic Identifier](https://www.nhgis.org/user-resources/geographic-crosswalks) for the census tract from the 2010 census
 `lat_tract` | Latitude of the center of the census tract
-`long_tract` | Lognitude of the center of the census tract
+`long_tract` | Longitude of the center of the census tract
 `population` | Number of people living in the census tract according to 5-year American Community Survey data from 2017
 `adj_radiuspop_5` | Estimate of the number of people within a 5-mile radius of a census tract. For a census tract that is more than 5 miles away any other census tract (centroid to centroid), this number is decreased based on the minimum distance to the nearest census tract.
 `urbanindex` | A calculation of how urban or rural a given area is; calculated as the natural logarithm of `adj_radiuspop_5`