In 2020, there were more than 3,613,600 births in the United States.  The four-state Southwestern U.S. region accounted for 514,663 births in 2020, or about 14% of all births in the U.S. that year.  With 12.01 births per 1,000 population, the Southwestern U.S. regional birth rate was 9.5% higher than the national average birth rate.  Further examination of state-level data from the National Center for Health Statistics, a unit of the CDC, provides the following details about birth rates in the Southwestern U.S.:

Birth Rates in the Southwestern U.S.

State	Births	Population	Birth Rate*
Arizona	76,947	7,421,401	10.37
New Mexico	21,903	2,106,319	10.40
Oklahoma	47,623	3,980,783	11.96
Texas	368,190	29,360,759	12.54
Region	514,663	42,869,262	12.01
U.S.	3,613,647	329,484,123	10.97

(*) number of births per 1,000 population

Report Period: 2020

Source: CDC Wonder. Centers for Disease Control and Prevention, National Center for Health Statistics. National Vital Statistics System, Natality on CDC WONDER Online Database. Data are from the Natality Records 2016-2020, as compiled from data provided by the 57 vital statistics jurisdictions through the Vital Statistics Cooperative Program. Accessed on August 5, 2022