Final Geographic-specific Exclusive Breastfeeding Rates among Children born in 2006 (Percent +/- half 95% Confidence Interval)
State & Breakdown n Exclusive Breastfeeding1
through 3 months		 Exclusive Breastfeeding1
through 6 months
US National 24387 33.6±1.0 14.1±0.8
ALABAMA 436 24.3±4.5 6.8±2.3
ALASKA 284 43.8±6.9 17.7±5.1
ARIZONA 403 33.9±5.4 12.8±3.8
ARKANSAS 431 22.7±4.7 7.9±2.6
CALIFORNIA 1162 42.5±4.5 20.0±3.6
  CA-Los Angeles County 406 30.9±4.9 12.7±3.6
  CA-Santa Clara County 190 51.8±8.3 21.7±6.8
  CA-Northern CA  184 48.8±8.4 26.1±7.0
COLORADO 416 48.0±7.3 23.5±6.1
CONNECTICUT 319 34.4±5.9 13.1±4.1
DELAWARE 375 29.0±5.1 8.1±2.7
DISTRICT OF COLUMBIA 422 34.4±5.6 14.1±4.2
FLORIDA 860 31.3±5.1 11.9±3.1
 FL-Miami-Dade County 273 29.1±6.6 10.3±4.4
 FL-Orange County 230 30.6±7.1 13.0±5.0
GEORGIA 378 29.0±5.5 12.5±4.0
HAWAII 341 43.3±6.1 21.1±4.9
IDAHO 303 48.8±6.5 16.4±4.4
ILLINOIS 1210 30.7±4.0 13.2±2.9
  IL-City of Chicago 485 27.3±4.8 9.4±2.7
  IL-Madison/St. Clair Counties 271 28.0±5.9 14.9±4.5
INDIANA 664 30.4±5.4 11.1±3.3
  IN-Lake County 128 12.4±6.2 3.2±3.2
  IN-Marion County 135 26.2±7.6 7.6±3.9
IOWA 354 33.2±5.3 12.8±3.6
KANSAS 352 38.3±6.4 17.1±5.0
KENTUCKY 408 25.1±4.6 9.4±3.2
LOUISIANA 457 18.3±4.0 5.6±2.1
MAINE 362 38.7±5.5 18.3±4.1
MARYLAND 789 29.9±5.0 10.6±3.1
  MD-Baltimore City 396 26.2±4.9 11.7±3.6
MASSACHUSETTS 356 37.6±6.0 13.8±4.3
MICHIGAN 416 26.4±4.9 11.1±3.4
MINNESOTA 455 41.3±5.3 17.9±4.0
 MN-Twin Cities 220 40.0±7.3 16.6±5.5
MISSISSIPPI 493 16.1±3.7 4.3±1.7
MISSOURI 434 26.3±4.8 9.9±3.1
MONTANA 335 42.3±6.2 20.9±4.9
NEBRASKA 363 35.6±5.5 12.2±3.4
NEVADA 367 31.8±5.3 11.0±3.5
NEW HAMPSHIRE 310 41.5±6.0 19.6±4.8
NEW JERSEY 470 31.1±4.9 14.4±3.6
NEW MEXICO 405 33.3±5.4 13.4±3.7
NEW YORK 720 27.2±3.8 11.1±2.8
  NY-NYC 5 Counties 380 25.6±4.9 10.7±3.3
NORTH CAROLINA 379 30.6±5.5 12.6±4.0
NORTH DAKOTA 316 39.4±5.7 11.3±3.6
OHIO 363 23.4±4.6 9.6±3.3
OKLAHOMA 352 29.0±5.7 9.7±3.2
OREGON 311 55.9±6.7 22.4±5.3
PENNSYLVANIA 817 29.0±4.4 9.9±2.8
  PA-Philadelphia 458 22.5±4.1 9.5±2.9
RHODE ISLAND 320 32.5±6.4 8.9±3.4
SOUTH CAROLINA 415 23.6±4.5 9.3±2.9
SOUTH DAKOTA 349 37.0±5.7 18.4±4.7
TENNESSEE 426 26.6±4.9 11.8±3.6
TEXAS 1814 33.9±4.0 14.4±2.8
  TX-Bexar County 347 29.2±5.6 11.0±3.6
  TX-City of Houston 379 29.8±5.8 12.6±4.2
  TX-Dallas County 375 35.8±6.3 15.7±5.2
  TX-El Paso County 353 32.2±5.4 9.4±3.2
UTAH 330 48.6±6.9 20.3±6.0
VERMONT 344 48.0±5.8 23.8±4.5
VIRGINIA 362 39.2±6.4 17.5±5.0
WASHINGTON 608 50.5±5.2 26.2±4.6
  WA-Eastern/Western WA 339 46.7±5.9 24.2±4.9
WEST VIRGINIA 370 20.4±4.3 7.7±2.7
WISCONSIN 319 43.9±6.3 16.3±4.4
WYOMING 342 45.6±5.8 15.9±4.0

1Exclusive breastfeeding is defined as ONLY breast milk — NO solids, no water, and no other liquids.
Source: National Immunization Survey, Centers for Disease Control and Prevention, Department of Health and Human Services

Sample sizes appearing in the NIS breastfeeding tables are slightly smaller than the numbers published in other NIS publications due to the fact that in the DNPAO breastfeeding analyses, the sample was limited to records with valid responses to the breastfeeding questions.

Counties and cities not sampled or with sample size <100 (AL-Jefferson County; AZ-Maricopa County; CA-Alameda County; CA-Fresno County; CA-San Bernardino County; CA-San Diego County; CO-Denver; FL-Duval County; GA-Fulton/DeKalb Counties; KS-Eastern KS; LA-Orleans Parish; MA-City of Boston; MI-City of Detroit; MO-St. Louis County/City; NJ-City of Newark; NM-Southern NM; NV-Clark County; OH-Cuyahoga County; OH-Franklin County; PA-Allegheny County; TN-Davidson County; TN-Shelby County; WA-King County; and WI-Milwaukee County) are not reported on in this table.