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Table 1 Population, Region and Clinic Numbers in HHS Regions and Megaregions

From: Differences in utilization of Intracytoplasmic sperm injection (ICSI) within human services (HHS) regions and metropolitan megaregions in the U.S.

HHS Regions US states Populationa (millions) Clinics (N)
1.Boston CT, ME, MA, NH, RI, VT 14.6 18
2.New York NJ, NY 28.4 42
3.Philadelphia DE, DC, MD, PA, VA, WV 30.2 25
4.Atlanta AL, FL, GA, KY, MS, NC, SC, TN 62.4 35
5.Chicago IL, IN, MI, MN, OH, WI 48.1 43
6.Dallas AR, LA, NM, OK, TX 43.1 28
7.Kansas City KS, MO, NE 10.8 11
8.Denver CO, MT, ND, SD, UT, WY 11.2 8
9.San Francisco AZ, CA, HI, NV 48.7 55
10.Seattle AK, ID, OR, WA 13.1 9
Total:   310.6 274
Megaregions Major US Cities   
1. Great Lakes Buffalo, Cedar Rapids, Chicago, Cincinnati, Cleveland, Columbus, Dayton, Detroit, Erie, Green Bay, Indianapolis, Louisville, Madison, Milwaukee, Pittsburgh, Rochester (NY) 55.5 51
2. Northeast Atlantic City, Baltimore, Boston, Norfolk, Newark, New York, Philadelphia, Portland (ME), Providence, Richmond, Washington, Wilmington, Worcester 52.3 79
3. Southern California Anaheim, Bakersfield, Inland Empire (San Bernardino–Riverside), Las Vegas, Long Beach, Los Angeles, San Diego, Tijuana 24.4 28
4. Texas Triangle Austin, Dallas–Fort Worth, Houston, Oklahoma City, San Antonio, Tulsa 19.7 16
5. Piedmont Atlantic Atlanta, Birmingham, Charlotte, Greenville, Knoxville, Memphis, Nashville, Piedmont Triad (Greensboro–Winston-Salem), Research Triangle (Raleigh–Durham) 17.6 19
6. Florida Fort Lauderdale, Jacksonville, Miami, Orlando, Tampa Bay Area, St. Petersburg 17.3 12
7. Northern California Fresno, Modesto, Oakland, Reno, Sacramento, San Francisco, San Jose 14 16
8. Gulf Coast Baton Rouge, Houston, Lafayette, New Orleans, Pensacola 13.4 9
9. Cascadia Portland (OR), Salem, Seattle, Tacoma 12.4 9
10. Arizona Sun Corridor Mesa, Phoenix, Tucson 5.6 6
11. Front Range Albuquerque, Cheyenne, Colorado Springs, Denver, Pueblo, Salt Lake City 5.5 2
Total   237.7 247
  1. aHHS Regions are for 2012. Megaregions are for 2010