Provisional Geographic-specific Exclusive Breastfeeding Rates among Children born in 2006 (Percent +/- half 95% Confidence Interval)
State & Breakdown Number Exclusive Breastfeeding1
through 3 months		 Exclusive Breastfeeding1
through 6 months
US National 16679 33.1±1.2 13.6±0.9
ALABAMA 312 24.2±5.4 6.3±2.5
ALASKA 202 45.5±8.4 16.9±6.1
ARIZONA 241 29.7±6.4 11.9±4.5
ARKANSAS 307 23.6±5.9 6.3±2.7
CALIFORNIA 959 42.4±5.3 18.6±4.2
      CA-Los Angeles County 298 30.1±5.5 11.7±3.8
      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 255 49.2±8.9 22.6±7.9
CONNECTICUT 216 35.1±7.1 14.4±5.2
DELAWARE 260 28.1±6.1 7.5±3.0
DISTRICT OF COLUMBIA 273 31.3±6.7 13.3±5.0
FLORIDA 716 30.7±6.1 11.9±3.7
      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 254 28.0±6.6 14.8±5.3
HAWAII 242 44.9±7.4 22.4±6.1
IDAHO 209 46.7±7.6 17.7±5.4
ILLINOIS 893 28.5±4.6 11.9±3.1
      IL-City of Chicago 321 25.8±5.3 8.8±3.1
      IL-Madison/St. Clair Counties 271 28.0±5.9 14.9±4.5
INDIANA 333 28.9±6.5 10.6±3.7
IOWA 248 32.3±6.2 10.6±3.9
KANSAS 262 36.0±7.0 16.8±5.3
KENTUCKY 242 27.2±6.2 9.4±4.4
LOUISIANA 337 17.8±4.6 5.0±2.3
MAINE 249 38.7±6.7 18.1±4.9
MARYLAND 579 28.5±5.4 10.1±3.2
      MD-Baltimore City 286 25.2±5.4 12.2±4.1
MASSACHUSETTS 245 39.0±7.4 13.5±5.2
MICHIGAN 257 23.5±5.7 10.7±4.1
MINNESOTA 337 39.8±6.2 15.0±4.2
      MN-Twin Cities 220 40.0±7.3 16.6±5.5
MISSISSIPPI 343 16.8±4.9 4.6±2.1
MISSOURI 269 24.8±5.9 8.5±3.5
MONTANA 222 40.8±7.2 20.5±5.9
NEBRASKA 249 31.7±6.3 11.9±4.0
NEVADA 228 31.8±6.6 9.7±4.1
NEW HAMPSHIRE 208 42.6±7.2 20.6±5.7
NEW JERSEY 290 29.7±6.0 13.2±4.4
NEW MEXICO 246 33.2±6.9 14.0±4.9
NEW YORK 498 24.9±4.5 9.6±3.2
      NY-NYC 5 Counties 274 23.6±5.5 10.7±3.8
NORTH CAROLINA 271 30.2±6.7 13.1±5.1
NORTH DAKOTA 225 33.7±6.5 11.1±4.2
OHIO 238 22.4±5.5 9.1±3.9
OKLAHOMA 226 30.6±7.3 8.4±3.6
OREGON 179 56.6±8.6 20.8±6.6
PENNSYLVANIA 578 29.3±5.1 10.1±3.1
      PA-Philadelphia 328 23.9±5.0 9.7±3.5
RHODE ISLAND 184 31.8±7.8 8.7±4.2
SOUTH CAROLINA 307 25.5±5.5 9.6±3.5
SOUTH DAKOTA 245 36.5±6.8 17.6±5.3
TENNESSEE 278 28.2±6.1 12.8±4.7
TEXAS 1240 34.2±4.8 14.2±3.4
      TX-Bexar County 245 28.5±6.9 10.0±4.4
      TX-City of Houston 274 31.9±6.9 14.3±5.2
      TX-Dallas County 259 32.8±7.0 12.1±4.5
      TX-El Paso County 229 34.3±6.9 9.5±4.1
UTAH 214 50.8±8.5 24.0±7.8
VERMONT 187 49.2±7.7 23.5±5.8
VIRGINIA 235 38.7±8.0 18.8±6.6
WASHINGTON 394 48.8±6.6 25.3±5.5
      WA-Eastern/Western WA 219 48.0±7.3 25.0±6.2
WEST VIRGINIA 267 21.3±5.2 8.4±3.4
WISCONSIN 208 45.2±7.6 16.8±5.4
WYOMING 222 46.2±7.1 16.8±5.1
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 Alameda, Fresno, San Bernardino, and San Diego Counties; Denver, Colorado; Florida's Duval County; Georgia's Fulton/Dekalb Counties; Indiana's Marion County; 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.