Final Geographic-specific Exclusive Breastfeeding Rates among Children born in 2004 whose caregivers were interviewed after 2005 (Percent +/- half 95% Confidence Interval)
State & Breakdown Number Exclusive Breastfeeding1
through 3 months		 Exclusive Breastfeeding1
through 6 months
US National 27391 31.5±0.9 12.1±0.7
ALABAMA 351 18.9±4.6 5.6±2.9
ALASKA 322 48.2±6.1 22.9±5.0
ARIZONA 595 36.6±4.7 13.7±3.1
AZ-Maricopa County 246 39.5±7.1 14.6±4.9
ARKANSAS 362 19.6±4.8 6.5±3.2
CALIFORNIA 2051 39.4±4.0 18.3±3.2
 CA-Alameda County 161 42.1±9.1 16.5±6.9
 CA-Fresno County 248 36.6±6.8 10.9±4.2
 CA-Los Angeles County 441 37.1±5.2 17.6±4.0
 CA-San Bernardino County 191 34.5±7.3 11.1±4.6
 CA-San Diego County 259 38.0±6.5 14.2±4.9
 CA-Santa Clara County 187 40.2±7.7 14.2±5.0
 CA-Northern CA  218 45.0±7.8 17.0±5.9
COLORADO 278 38.8±7.8 11.6±4.7
CONNECTICUT 364 35.8±5.4 9.9±3.1
DELAWARE 343 28.0±5.7 12.4±4.0
DISTRICT OF COLUMBIA 450 30.3±4.7 12.2±3.2
FLORIDA 1167 32.8±4.7 12.6±3.4
 FL-Duval County 320 29.9±5.9 10.9±4.2
 FL-Miami-Dade County 432 25.1±4.9 9.6±3.5
GEORGIA 628 26.0±4.9 12.2±3.9
 GA-Fulton/DeKalb Counties 232 26.0±6.8 8.8±4.2
HAWAII 324 37.5±6.3 14.4±4.6
IDAHO 253 44.0±6.7 14.6±4.4
ILLINOIS 883 31.7±4.3 10.2±2.7
 IL-City of Chicago 487 25.3±4.3 7.7±2.4
INDIANA 838 30.1±4.3 9.9±2.7
 IN-Marion County 441 24.9±4.8 7.6±2.8
IOWA 305 35.5±6.1 13.2±4.2
KANSAS 570 35.8±5.2 13.5±3.6
 KS-Eastern KS 230 32.2±7.3 11.9±4.9
KENTUCKY 405 24.8±4.6 6.8±2.5
LOUISIANA 444 15.6±3.6 3.9±1.7
MAINE 287 40.9±6.4 15.2±4.8
MARYLAND 597 33.7±5.3 12.2±3.6
 MD-Baltimore City 208 34.8±7.2 10.4±4.1
MASSACHUSETTS 538 31.8±5.5 12.4±3.9
 MA-City of Boston 218 32.1±6.7 13.0±5.0
MICHIGAN 645 28.0±4.8 10.2±3.3
 MI-City of Detroit 226 15.3±4.6 4.9±2.6
MINNESOTA 321 34.0±5.9 17.1±4.7
MISSISSIPPI 402 16.9±4.2 7.5±3.3
MISSOURI 372 30.4±5.5 9.0±3.5
MONTANA 344 47.6±6.2 15.1±4.4
NEBRASKA 320 34.0±6.2 10.9±4.6
NEVADA 321 32.3±5.6 13.3±4.1
NEW HAMPSHIRE 334 37.1±5.8 14.4±4.2
NEW JERSEY 678 26.7±4.8 11.5±3.4
 NJ-City of Newark 224 17.0±6.0 3.8±2.7
NEW MEXICO 538 37.5±5.5 17.9±4.6
NM-Southern NM 205 31.9±7.5 11.0±5.2
NEW YORK 794 26.9±3.4 12.0±2.5
 NY-NYC 5 Counties 447 25.6±4.4 12.9±3.4
NORTH CAROLINA 337 27.6±5.4 11.9±4.1
NORTH DAKOTA 364 37.4±5.5 13.4±3.8
OHIO 629 26.2±4.4 8.7±2.7
 OH-Cuyahoga County 242 29.2±6.4 12.7±4.6
OKLAHOMA 396 24.6±4.7 10.2±3.2
OREGON 289 46.8±6.8 20.6±5.3
PENNSYLVANIA 1058 29.4±3.8 9.7±2.3
 PA-Philadelphia 347 18.5±4.4 8.1±3.3
 PA-Allegheny County 267 26.2±6.1 7.0±3.5
RHODE ISLAND 400 30.7±5.4 8.6±2.9
SOUTH CAROLINA 453 26.4±4.6 5.9±2.2
SOUTH DAKOTA 410 33.6±5.3 12.3±3.5
TENNESSEE 657 26.7±4.8 11.6±3.5
 TN-Shelby County 293 24.8±5.7 9.0±3.9
TEXAS 1951 25.3±3.1 7.5±1.7
 TX-Bexar County 381 28.3±5.3 8.8±2.9
 TX-City of Houston 393 26.6±4.7 7.6±2.8
 TX-Dallas County 339 29.7±5.5 11.3±4.3
 TX-El Paso County 371 28.6±5.0 8.1±2.9
UTAH 302 42.3±6.7 11.2±4.2
VERMONT 283 47.9±6.9 18.4±4.8
VIRGINIA 437 33.4±5.0 12.2±3.1
WASHINGTON 743 50.4±5.0 20.7±3.8
WA-King County 156 57.2±9.1 27.9±8.3
WA-Eastern WA 206 40.8±7.5 17.0±6.3
WA-Western WA 102 44.1±11.2 19.6±8.5
WEST VIRGINIA 364 23.3±5.1 7.1±2.5
WISCONSIN 524 34.5±5.3 14.3±3.9
 WI-Milwaukee County 185 26.4±7.1 11.4±5.6
WYOMING 370 36.7±5.6 11.7±3.5
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; Denver, Colorado; Louisiana's Orleans Parish; Missouri's St. Louis County and City; Nevada's Clark County; Ohio's Franklin County; and Tennessee's Davidson County) are not reported on in this table.