Summary of Findings

Despite differences in estimating methods and sample sizes, the estimates of median age at first marriage are surprisingly similar in all data sets examined.

However:

• The data are no longer available from NCHS.
• CPS provides reliable estimates only at the national level.
• The decennial census will not have marital status on the 2010 census form. 

Therefore, the ACS provides:

• The best annual data on marital status at the state level  
• Greater detail by characteristics such as race and Hispanic origin.