Final Geographic-specific Exclusive Breastfeeding Rates among Children born in 2005 (Percent +/- half 95% Confidence Interval)
State & Breakdown n Exclusive Breastfeeding1
through 3 months		 Exclusive Breastfeeding1
through 6 months
US National 23279 32.1±1.0 12.3±0.7
ALABAMA 371 19.6±4.4 7.3±2.8
ALASKA 294 41.2±6.3 19.7±5.2
ARIZONA 393 31.0±5.4 10.9±3.4
ARKANSAS 409 21.4±4.4 6.9±2.8
CALIFORNIA 1467 41.7±4.5 17.2±3.4
  CA-Alameda County 256 46.4±7.0 16.2±4.7
  CA-Los Angeles County 392 34.3±5.2 12.6±3.6
  CA-San Bernardino County 217 39.4±7.1 14.2±5.2
  CA-Santa Clara County 111 46.1±11.4 19.2±9.0
  CA-Northern CA 124 45.5±9.9 21.1±8.1
COLORADO 345 43.9±7.3 14.8±4.6
CONNECTICUT 310 36.4±5.8 11.5±3.4
DELAWARE 409 23.6±4.5 7.6±2.5
DISTRICT OF COLUMBIA 391 27.8±4.7 9.6±3.1
FLORIDA 840 28.6±5.3 9.8±3.5
 FL-Miami-Dade County 391 29.9±6.8 11.0±6.1
 FL-Orange County 103 27.6±10.2 4.8±4.3
GEORGIA 417 24.8±5.4 10.6±3.7
HAWAII 323 39.6±6.1 17.3±4.5
IDAHO 274 49.7±6.3 21.4±5.2
ILLINOIS 1005 33.2±4.3 11.1±2.7
  IL-City of Chicago 398 26.8±5.1 9.0±3.0
  IL-Madison/St. Clair Counties 177 22.5±6.9 7.7±4.1
INDIANA 654 26.5±4.8 10.3±3.3
  IN-Marion County 262 24.6±5.6 8.8±3.5
IOWA 273 36.7±6.3 11.9±4.0
KANSAS 333 34.1±6.2 13.8±4.8
KENTUCKY 384 22.9±4.9 7.2±2.6
LOUISIANA 458 19.7±4.3 7.7±3.0
MAINE 307 41.4±6.1 12.8±4.1
MARYLAND 566 29.4±5.0 12.7±3.8
  MD-Baltimore City 142 16.3±5.7 4.5±2.8
MASSACHUSETTS 322 37.6±6.5 14.0±4.8
MICHIGAN 366 29.2±5.6 11.2±3.7
MINNESOTA 351 41.3±6.1 16.6±4.8
 MN-Twin Cities 101 52.4±11.7 15.8±8.3
MISSISSIPPI 371 18.0±4.7 5.8±2.8
MISSOURI 378 30.0±5.7 9.2±3.3
MONTANA 340 42.8±5.9 19.0±4.6
NEBRASKA 295 37.7±6.5 14.9±4.8
NEVADA 343 32.9±5.5 12.3±3.8
NEW HAMPSHIRE 300 38.0±6.2 11.6±3.9
NEW JERSEY 422 25.2±5.0 10.2±3.3
NEW MEXICO 341 40.4±6.7 16.4±5.1
NEW YORK 754 26.9±3.6 9.8±2.2
  NY-NYC 5 Counties 424 25.9±4.8 11.5±3.4
NORTH CAROLINA 357 28.0±5.6 11.2±3.7
NORTH DAKOTA 318 39.6±5.8 15.3±4.1
OHIO 421 24.4±4.5 10.2±3.3
OKLAHOMA 350 27.2±5.3 10.8±3.3
OREGON 270 50.5±7.1 24.6±6.0
PENNSYLVANIA 788 30.6±4.0 9.6±2.6
  PA-Philadelphia 323 22.8±4.9 8.4±3.0
RHODE ISLAND 304 34.9±6.2 13.9±4.3
SOUTH CAROLINA 462 27.4±4.8 11.6±3.8
SOUTH DAKOTA 366 34.4±5.9 11.8±3.8
TENNESSEE 389 19.4±4.3 7.4±2.7
TEXAS 1831 31.1±4.0 11.0±2.6
  TX-Bexar County 399 24.8±5.5 10.0±3.7
  TX-City of Houston 398 24.6±4.7 8.9±3.2
  TX-Dallas County 357 35.7±5.9 13.0±3.9
  TX-El Paso County 312 26.8±5.3 8.0±3.1
UTAH 342 43.4±6.7 19.1±5.1
VERMONT 292 47.2±6.7 22.8±5.3
VIRGINIA 404 32.6±5.8 15.2±4.7
WASHINGTON 599 44.1±5.2 20.2±4.3
  WA-Eastern/Western WA 321 48.9±6.3 16.9±4.5
WEST VIRGINIA 357 16.5±4.1 5.5±2.3
WISCONSIN 303 35.7±6.4 13.1±4.9
WYOMING 320 40.6±6.3 11.9±3.6

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 (Alabama's Jefferson County; Arizona's Maricopa County; California's San Fresno and San Diego Counties; Denver, Colorado; Florida's Duval County; Georgia's Fulton/Dekalb Counties; Eastern Kansas; Louisiana's Orleans Parish; Boston, Massachusetts; Detroit, Michigan; Missouri's St. Louis County and City; Nevada's Clark County; Newark, New Jersey; Southern New Mexico; Ohio's Cuyahoga and Franklin Counties; Pennsylvania's Allegheny County; Tennessee's Davidson's and Shelby Counties; Washington's King County; and Wisconsin's Milwaukee County) are not reported on in this table.