Final Geographic-specific Breastfeeding Rates among Children born in 2005 (Percent +/- half 95% Confidence Interval)
State & Breakdown Number Ever
Breastfeeding		 Breastfeeding
at 6 months		 Breastfeeding
at 12 months
US National 23714 74.1±1.0 42.9±1.1 21.5±0.9
ALABAMA 379 54.9±6.2 28.2±5.0 11.5±3.3
ALASKA 304 85.0±4.6 49.9±6.4 23.5±5.0
ARIZONA 398 85.1±4.4 48.2±6.1 23.3±5.0
ARKANSAS 418 61.2±6.1 29.9±5.3 12.9±3.8
CALIFORNIA 1496 84.4±3.2 58.1±4.4 29.7±4.1
 CA-Alameda County 261 86.3±5.1 65.3±6.7 41.6±6.8
 CA-Los Angeles County 398 81.9±4.2 54.8±5.5 26.4±4.9
 CA-San Bernardino County 223 83.0±5.6 48.5±7.1 28.5±6.3
 CA-Santa Clara County 114 90.0±5.5 68.4±9.9 34.5±11.3
 CA-Northern CA  126 84.1±8.0 52.6±10.0 29.2±8.5
COLORADO 353 85.4±5.0 51.0±7.4 26.4±6.0
CONNECTICUT 321 77.2±5.7 45.1±6.2 20.1±4.8
DELAWARE 418 64.3±5.8 30.9±5.0 16.1±3.9
DISTRICT OF COLUMBIA 398 72.1±5.5 48.8±5.7 28.9±5.0
FLORIDA 852 71.2±5.5 37.4±5.7 20.6±4.9
 FL-Miami-Dade County 400 79.7±5.3 42.2±6.7 20.2±6.4
 FL-Orange County 103 69.8±11.8 36.0±11.2 22.7±9.6
GEORGIA 424 70.5±6.1 38.9±6.2 16.7±4.6
HAWAII 328 87.1±4.9 56.7±6.6 38.9±6.2
IDAHO 280 87.1±4.3 57.7±6.4 27.8±5.6
ILLINOIS 1028 71.3±4.2 39.2±4.3 17.0±3.3
 IL-City of Chicago 403 68.9±5.8 33.8±5.6 16.5±4.5
 IL-Madison/St. Clair Counties 178 56.1±9.2 29.4±7.6 13.2±5.5
INDIANA 672 64.7±6.1 35.1±5.3 17.7±4.1
 IN-Marion County 269 65.5±7.0 33.4±6.2 13.7±4.4
IOWA 279 73.4±6.0 41.7±6.4 22.8±5.5
KANSAS 339 77.5±5.4 42.1±6.4 21.1±5.1
KENTUCKY 392 50.6±6.1 22.9±4.4 11.2±3.2
LOUISIANA 461 47.6±5.8 22.0±4.5 10.1±3.2
MAINE 309 75.5±5.6 43.3±6.1 22.6±4.8
MARYLAND 582 74.6±5.1 44.2±5.4 24.1±4.5
 MD-Baltimore City 143 50.1±9.9 27.8±8.0 11.2±5.4
MASSACHUSETTS 329 78.9±5.8 47.0±6.7 23.4±5.4
MICHIGAN 369 66.3±6.7 35.4±5.9 19.5±4.7
MINNESOTA 360 78.5±5.5 46.7±6.4 24.1±5.2
 MN-Twin Cities 103 85.6±9.7 54.6±11.7 32.5±10.5
MISSISSIPPI 377 50.3±6.2 21.1±4.8 8.9±3.2
MISSOURI 381 68.9±6.2 32.9±5.7 15.4±4.1
MONTANA 350 79.5±5.4 52.9±6.1 30.7±5.3
NEBRASKA 305 81.3±5.6 53.1±6.7 24.0±5.5
NEVADA 348 79.0±5.0 44.2±5.9 19.5±4.6
NEW HAMPSHIRE 304 78.3±5.6 48.1±6.5 25.1±5.5
NEW JERSEY 428 75.1±5.4 40.8±5.9 17.9±4.2
NEW MEXICO 345 79.3±6.2 43.5±6.7 28.1±5.8
NEW YORK 770 74.6±3.7 44.3±4.0 24.9±3.4
 NY-NYC 5 Counties 435 83.7±4.0 53.4±5.3 32.0±5.0
NORTH CAROLINA 367 69.2±6.4 39.4±6.1 21.0±4.9
NORTH DAKOTA 322 68.7±5.9 40.5±5.8 21.5±4.7
OHIO 429 67.2±5.5 33.2±5.0 16.1±3.9
OKLAHOMA 359 69.6±6.0 29.9±5.2 14.4±3.6
OREGON 276 85.7±5.8 60.0±7.2 37.2±6.6
PENNSYLVANIA 807 68.9±4.2 37.4±4.3 17.4±3.3
 PA-Philadelphia 331 55.9±6.3 33.0±5.8 12.0±3.8
RHODE ISLAND 310 72.3±6.5 43.4±6.8 20.7±5.2
SOUTH CAROLINA 471 66.5±5.3 35.3±5.1 16.8±4.2
SOUTH DAKOTA 369 71.5±6.1 41.8±6.1 17.6±4.4
TENNESSEE 397 58.2±6.5 28.0±5.3 14.3±4.1
TEXAS 1851 77.3±3.8 42.4±4.3 21.2±3.3
 TX-Bexar County 405 69.5±5.9 34.5±6.1 20.0±5.5
 TX-City of Houston 399 75.5±5.4 43.9±5.8 21.7±4.8
 TX-Dallas County 362 81.8±4.8 53.4±6.2 28.4±5.6
 TX-El Paso County 317 72.6±5.7 33.7±5.8 15.5±4.2
UTAH 352 87.6±4.5 59.1±6.6 23.6±5.1
VERMONT 292 78.9±5.9 52.9±6.7 33.3±6.1
VIRGINIA 411 74.4±5.9 47.0±6.2 18.0±4.3
WASHINGTON 613 90.9±3.1 57.4±5.3 34.1±4.9
 WA-Eastern/Western WA 326 88.7±4.0 58.3±6.3 34.1±5.9
WEST VIRGINIA 361 54.3±6.3 23.8±4.9 13.3±3.9
WISCONSIN 307 70.6±6.4 41.4±6.6 17.1±5.2
WYOMING 323 82.1±5.2 47.9±6.4 22.5±5.1
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.