* Interpret changes in median value with caution; some aspects of database have changed over time, and median value is affected by the number of metro areas reporting zeroes.
Years Available: 2002–2017
Permanent Link: http://data.sagepub.com/sagestats/7012
General Notes: *Median value gives the value for the "average" metro area for this metric, the 50th percentile of all metro areas reporting data. Data for all urbanized areas within a metro area. An urbanized area has at least 50,000 people with a population density of 1,000 or more per square mile at its core. There may be more than one distinct urbanized area in a metro area. SAGE used data from the original source to sum up values for multiple transit bodies in the same metro area.