Final Geographic-specific Breastfeeding Rates among Children born in 2004
(Percent +/- half 95% Confidence Interval)

State & Breakdown Number Ever
Breastfeeding
Breastfeeding
at 6 months
Breastfeeding
at 12 months
US National 30975 73.1±0.8 42.1±0.9 21.4±0.8
ALABAMA 453 53.9±6.0 25.7±4.8 11.3±3.1
ALASKA 348 82.4±5.1 59.0±6.1 34.4±5.5
ARIZONA 710 81.5±3.9 43.7±4.5 22.2±3.7
 AZ-Maricopa County 307 86.5±4.4 47.3±6.6 23.4±5.5
ARKANSAS 386 61.9±6.7 28.5±5.5 11.4±3.5
CALIFORNIA 2321 84.3±2.8 54.1±3.8 32.2±3.5
 CA-Alameda County 224 88.6±5.4 60.8±7.9 37.8±7.3
 CA-Fresno County 250 83.1±5.8 47.9±7.0 28.4±6.2
 CA-Los Angeles County 513 81.1±4.5 50.8±5.0 28.6±4.4
 CA-San Bernardino County 240 74.8±6.3 43.7±6.9 20.6±5.4
 CA-San Diego County 263 85.9±5.1 54.1±7.0 26.9±5.9
 CA-Santa Clara County 194 91.7±4.8 64.0±7.7 33.7±7.1
 CA-Northern CA  230 86.7±5.1 56.5±7.7 32.6±7.1
COLORADO 366 83.5±5.3 46.0±7.2 26.7±6.4
CONNECTICUT 399 78.1±4.8 43.0±5.4 23.2±4.5
DELAWARE 383 63.4±6.3 37.0±5.8 15.2±4.0
DISTRICT OF COLUMBIA 489 69.9±5.2 44.0±5.1 23.6±4.1
FLORIDA 1296 76.6±4.3 38.2±4.5 17.8±3.4
 FL-Duval County 388 73.7±5.5 36.9±5.5 16.3±3.9
 FL-Miami-Dade County 440 79.2±5.0 44.0±5.9 18.1±4.6
GEORGIA 742 66.0±5.5 37.1±5.1 17.8±4.3
 GA-Fulton/DeKalb Counties 301 71.1±7.4 36.0±6.6 16.7±4.5
HAWAII 359 81.8±4.9 52.2±6.2 33.9±5.8
IDAHO 272 86.3±4.7 54.0±6.5 22.7±5.1
ILLINOIS 953 71.2±4.0 41.3±4.4 17.6±3.4
 IL-City of Chicago 528 66.3±5.3 38.2±4.8 18.3±3.7
INDIANA 878 64.9±5.0 34.4±4.5 18.2±3.5
 IN-Marion County 449 60.1±5.9 28.4±4.9 11.2±3.1
IOWA 337 72.2±5.6 43.2±6.0 19.2±4.4
KANSAS 610 72.8±5.0 42.3±5.1 19.1±3.9
 KS-Eastern KS 232 76.7±6.9 44.6±7.7 20.0±5.5
KENTUCKY 432 58.9±5.6 29.4±4.8 13.0±3.5
LOUISIANA 612 50.0±5.0 18.8±3.6 6.7±1.9
MAINE 304 75.4±5.6 46.1±6.2 26.5±5.4
MARYLAND 686 70.7±5.4 43.1±5.3 21.3±4.2
 MD-Baltimore City 260 64.2±6.9 38.7±6.8 20.0±5.5
MASSACHUSETTS 577 69.5±6.2 42.7±5.9 18.9±4.3
 MA-City of Boston 226 77.4±6.7 52.2±7.4 23.4±6.1
MICHIGAN 775 63.3±5.1 34.6±4.7 16.6±3.7
 MI-City of Detroit 292 43.9±6.6 19.4±4.6 7.3±2.8
MINNESOTA 353 81.1±5.4 47.0±6.2 23.6±5.1
MISSISSIPPI 448 50.4±5.6 24.2±4.7 9.9±3.2
MISSOURI 481 65.6±5.7 34.7±5.3 15.7±3.8
MONTANA 371 83.4±4.7 52.1±5.9 28.2±5.2
NEBRASKA 352 78.2±5.2 46.9±6.1 22.5±5.4
NEVADA 410 80.3±4.4 46.4±5.5 23.6±4.7
NEW HAMPSHIRE 366 78.0±5.4 49.1±5.9 27.6±5.0
NEW JERSEY 811 70.7±4.9 44.5±5.4 20.6±4.5
 NJ-City of Newark 300 67.2±6.7 36.4±6.7 17.7±5.0
NEW MEXICO 569 80.4±4.6 44.3±5.5 23.2±4.7
 NM-Southern NM 210 76.7±6.6 38.7±7.6 18.7±6.1
 NY-NYC 5 Counties 495 73.9±4.7 49.9±5.0 28.0±4.4
NORTH CAROLINA 360 73.0±5.9 40.9±5.8 20.9±4.7
NORTH DAKOTA 402 72.4±5.1 44.3±5.4 18.5±4.0
OHIO 773 58.8±5.0 32.9±4.4 14.0±3.0
 OH-Cuyahoga County 295 65.9±6.1 36.5±6.0 18.1±4.6
OKLAHOMA 443 66.6±5.6 31.1±4.8 12.9±3.3
OREGON 311 88.2±4.5 59.6±6.7 36.1±6.1
PENNSYLVANIA 1116 63.8±4.1 37.0±4.0 17.2±3.1
 PA-Philadelphia 380 50.5±5.7 28.3±5.1 12.1±3.4
 PA-Allegheny County 270 60.1±7.1 37.0±6.7 15.2±4.7
RHODE ISLAND 434 69.5±5.3 35.4±5.4 17.1±4.2
SOUTH CAROLINA 495 65.2±5.1 28.0±4.4 9.4±2.5
SOUTH DAKOTA 461 73.5±4.9 43.2±5.3 22.6±4.5
TENNESSEE 825 66.1±5.1 32.1±4.7 16.8±3.6
 TN-Shelby County 352 59.2±6.6 29.6±5.5 11.3±3.3
TEXAS 2264 75.0±3.1 39.6±3.4 19.3±2.8
 TX-Bexar County 414 75.4±5.3 40.5±5.8 18.0±4.4
 TX-City of Houston 445 78.2±4.5 47.2±5.2 22.2±4.3
 TX-Dallas County 397 76.2±4.8 45.9±5.5 23.5±4.8
 TX-El Paso County 452 69.6±4.8 33.7±4.7 12.1±3.1
UTAH 328 85.9±4.6 56.8±6.3 29.5±5.8
VERMONT 306 85.8±4.6 57.6±6.7 34.5±6.1
VIRGINIA 481 77.7±4.5 47.1±5.3 24.2±4.4
WASHINGTON 837 89.4±2.9 58.8±4.6 33.2±4.3
 WA-King County 198 91.1±4.9 67.0±8.0 41.4±8.0
 WA-Eastern WA 212 85.9±5.1 48.8±7.5 27.2±6.8
 WA-Western WA 104 89.2±6.8 56.9±11.5 42.1±10.8
WEST VIRGINIA 394 58.9±5.7 27.2±4.8 13.5±3.4
WISCONSIN 632 72.1±4.7 38.6±5.0 18.3±4.0
 WI-Milwaukee County 244 64.9±7.7 35.1±6.8 19.1±5.0
WYOMING 388 79.9±4.8 43.9±5.6 20.2±4.1
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; 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.