Final Geographic-specific Breastfeeding Rates among Children born in 2003
(Percent +/- half 95% Confidence Interval)

State & Breakdown Number Ever Breastfeeding Breastfeeding
at 6 Months
Breastfeeding
at 12 Months
US National 29256 72.6±0.9 39.1±0.9 19.6±0.8
ALABAMA 575 59.5±5.7 26.1±4.7 12.7±3.4
 AL-Jefferson County 205 58.0±7.9 28.9±7.0 12.9±4.9
ALASKA 321 81.8±5.1 43.8±6.2 23.0±4.9
ARIZONA 724 80.8±3.8 46.1±4.4 25.4±3.8
 AZ-Maricopa County 406 80.3±5.1 45.4±5.7 23.7±4.7
ARKANSAS 268 61.5±7.7 27.7±6.4 12.6±4.8
CALIFORNIA 1688 83.8±3.2 49.3±4.0 26.6±3.5
 CA-Alameda County 228 89.8±4.7 64.7±7.2 38.2±7.1
 CA-Fresno County 120 85.9±6.9 46.4±10.3 21.5±7.6
 CA-Los Angeles County 373 83.3±4.4 49.6±5.7 20.6±4.4
 CA-San Bernardino County 203 76.9±6.4 40.7±7.2 21.0±5.9
 CA-San Diego County 142 88.3±6.8 50.2±9.3 28.1±8.0
 CA-Santa Clara County 120 89.0±6.0 61.5±9.5 23.6±7.7
 CA-Northern CA  116 85.1±9.4 54.4±10.8 33.7±9.7
COLORADO 488 84.4±4.6 47.1±6.2 20.9±5.1
CO-Denver 179 84.8±6.6 41.3±8.8 17.8±6.3
CONNECTICUT 340 76.2±5.7 40.8±6.0 22.5±5.0
DELAWARE 335 69.0±6.3 39.0±6.0 18.5±4.5
DISTRICT OF COLUMBIA 516 73.1±4.7 43.9±4.9 22.8±3.8
FLORIDA 1114 69.8±4.5 36.8±4.5 18.5±3.7
 FL-Duval County 468 64.8±5.4 29.0±4.7 15.4±3.7
 FL-Miami-Dade County 189 78.3±7.7 38.5±8.8 20.3±7.3
GEORGIA 800 67.7±4.7 30.5±4.1 13.5±2.8
 GA-Fulton/DeKalb Counties 377 73.4±6.4 41.1±6.1 20.0±5.0
HAWAII 387 84.5±4.3 55.4±5.8 32.0±5.3
IDAHO 313 83.2±4.6 47.2±6.0 22.1±5.0
ILLINOIS 792 71.0±4.9 39.5±5.0 19.9±4.0
 IL-City of Chicago 487 69.4±5.6 40.0±5.4 17.6±4.0
INDIANA 497 67.2±6.0 37.1±5.7 17.4±4.3
 IN-Marion County 159 63.4±9.4 34.8±8.6 15.7±6.4
IOWA 318 73.8±5.6 37.4±6.1 15.7±4.3
KANSAS 496 75.3±5.1 37.8±5.3 17.3±4.0
 KS-Eastern KS 152 81.5±7.4 45.2±9.2 20.7±7.0
KENTUCKY 366 51.1±6.1 20.5±4.3 6.7±2.4
LOUISIANA 716 48.0±4.8 19.1±3.3 7.8±2.1
MAINE 292 77.1±5.4 45.3±6.2 27.3±5.4
MARYLAND 771 76.7±4.6 39.4±5.0 18.3±4.0
 MD-Baltimore City 347 56.6±6.2 27.4±5.1 13.3±3.6
MASSACHUSETTS 530 77.6±4.9 45.2±5.7 23.8±5.0
 MA-City of Boston 164 77.9±7.5 47.0±8.9 20.0±7.0
MICHIGAN 762 67.6±5.0 32.8±4.7 15.3±3.5
 MI-City of Detroit 342 51.2±6.1 19.7±4.5 7.7±2.9
MINNESOTA 322 79.4±5.4 47.0±6.1 24.3±5.2
MISSISSIPPI 440 44.4±5.6 18.1±4.0 7.3±2.7
MISSOURI 658 65.8±4.9 32.2±4.6 15.5±3.7
 MO-St. Louis County/City 259 63.0±7.7 33.7±6.5 14.5±4.8
MONTANA 381 81.2±5.1 49.3±5.8 26.1±5.0
NEBRASKA 340 75.5±5.3 43.5±6.1 23.8±5.2
NEVADA 504 71.7±4.9 37.3±4.9 17.2±3.8
 NV-Clark County 200 72.1±6.9 36.0±7.1 17.5±5.8
NEW HAMPSHIRE 364 76.6±5.2 48.6±5.8 25.5±4.9
NEW JERSEY 838 73.0±5.1 44.4±5.7 19.1±4.8
 NJ-City of Newark 421 69.0±5.5 32.7±5.5 12.9±3.8
NEW MEXICO 492 79.4±4.5 48.3±5.4 28.7±4.9
 NM-Southern NM 115 74.9±9.0 40.2±10.4 20.7±7.8
NEW YORK 840 74.7±3.5 42.3±3.8 24.2±3.2
 NY-NYC 5 Counties 467 80.0±4.2 50.0±5.3 29.2±4.7
NORTH CAROLINA 354 71.7±6.0 32.1±5.4 16.4±4.0
NORTH DAKOTA 433 69.4±5.1 33.7±5.0 16.3±3.8
OHIO 1036 64.2±4.6 30.9±4.2 14.2±3.0
 OH-Cuyahoga County 443 61.2±5.5 33.2±4.9 16.9±3.9
 OH-Franklin County 209 63.6±7.8 38.4±7.3 21.0±5.9
OKLAHOMA 414 65.3±5.8 29.8±5.1 14.1±3.7
OREGON 282 90.6±3.8 62.3±6.4 37.1±6.2
PENNSYLVANIA 812 69.1±4.8 37.4±4.9 19.8±4.0
 PA-Philadelphia 331 59.1±6.2 27.5±5.5 13.7±4.3
 PA-Allegheny County 114 69.3±11.7 45.6±12.2 23.1±10.7
RHODE ISLAND 412 68.1±5.1 35.1±5.1 17.7±4.0
SOUTH CAROLINA 451 58.3±5.7 30.2±4.9 12.7±3.5
SOUTH DAKOTA 413 75.1±5.1 40.7±5.5 21.1±4.7
TENNESSEE 1006 62.2±5.0 27.0±4.1 9.8±2.4
 TN-Davidson County 224 76.0±7.1 32.3±7.2 17.1±6.1
 TN-Shelby County 455 59.5±6.0 26.8±4.8 9.7±2.8
TEXAS 2038 71.5±3.3 35.5±3.3 16.5±2.6
 TX-Bexar County 382 70.8±5.6 30.6±5.3 15.6±4.2
 TX-City of Houston 454 73.9±4.9 42.0±5.0 20.7±4.0
 TX-Dallas County 297 74.4±6.0 41.4±6.3 15.7±4.8
 TX-El Paso County 365 75.5±4.9 35.9±5.5 14.7±3.9
UTAH 296 85.9±5.0 56.5±6.8 27.2±5.5
VERMONT 277 85.4±5.0 55.9±7.0 32.9±6.4
VIRGINIA 428 68.6±6.0 38.9±5.6 19.2±4.4
WASHINGTON 672 88.4±3.1 53.4±4.9 29.6±4.5
 WA-King County 277 85.8±6.2 55.9±7.8 31.2±6.6
WEST VIRGINIA 376 56.3±6.1 29.2±5.4 11.5±3.6
WISCONSIN 668 70.7±4.8 36.2±4.7 18.1±3.6
 WI-Milwaukee County 341 66.0±6.7 35.8±6.1 21.3±4.7
WYOMING 300 83.5±4.9 42.1±6.1 19.0±4.8
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 (Louisiana's Orleans Parish; and Eastern and Western Washington) are not reported on in this table.