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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: J Public Econ. 2013 Apr 8;102:51–69. doi: 10.1016/j.jpubeco.2013.03.009

Figure 3.

Figure 3

Variation in Within-ZIP Code Number of WIC Clinics Over 2005–2009

Notes: This figure is a histogram of ZIP codes that have had a non-zero change in the number of open WIC clinics between January 2005 and December 2009. There are 578 Texas ZIP codes that have ever had at least one WIC clinic operating between January 2005 and December 2009. Out of them, 114 ZIP codes had a non-zero change, while 464 ZIP codes experienced no change in the number of open WIC clinics over this time period. Note that 27 ZIP codes experienced a change in the number of open WIC clinics but had the same number of clinics in January 2005 and December 2009, and they are therefore excluded from the figure.