2/28/2013 - OMB released the revised delineations of Metropolitan Statistical Areas, which are effective immediately. The OMB’s revised definitions will not affect HMDA data collected in 2013. This is consistent with Appendix A §I.C.1 of the HMDA regulations, which indicates that institutions should use the MSA boundaries in effect as of January 1 of the calendar year for which they are reporting. The new MSA definitions will apply to HMDA data collected on or after January 1, 2014.

See OMB’s press release.