The geographic data includes the sample city where the focal child was born, mother's and father's state of residence at each interview for baseline to Year 9, the primary caregiver’s state of residence at Year 15, and strata and psu variables.  Baseline city and state of residence are coded numerically as noted in this documentation.

Please note: The city is only included at the time of the child's birth (Baseline wave). Cities for follow-up waves are not included.

Here are the baseline n sizes for each sample city:

Oakland, n = 330*

Austin, n = 326

Baltimore, n = 338

Detroit, n = 327*

Newark, n = 342*

Philadelphia, n = 337

Richmond, n = 327

Corpus Christi, n = 331

Indianapolis, n = 325

Milwaukee, n = 348*

New York, n = 384

San Jose, n = 326

Boston, n = 99

Nashville, n = 102

Chicago, n = 155

Jacksonville, n = 100

Toledo, n = 101

San Antonio, n = 100

Pittsburgh, n = 100

Norfolk, n = 99

* = city not included in national sample