Geographic-specific Formula Supplementation Rates among Children born in 2004 whose caregivers were interviewed after 2005
(Percent +/- half 95% Confidence Interval)

State & Breakdown

 Number Formula Supplementation1
before 2 days of age		 Number Formula Supplementation1
before 3 months of age
US Nation 21120 23.5±1.0 16689 37.4±1.3
ALABAMA 219 25.7±7.4 151 33.8±9.2
ALASKA 288 11.5±4.0 249 22.5±5.7
ARIZONA 504 28.9±5.1 397 35.6±5.7
 AZ-Maricopa County 215 29.7±7.5 172 37.1±8.4
ARKANSAS 244 18.5±6.6 172 38.5±8.9
CALIFORNIA 1786 25.4±3.9 1468 36.5±4.7
 CA-Alameda County 150 25.3±9.1 134 39.2±10.3
 CA-Fresno County 213 29.7±6.7 172 38.4±8.1
 CA-Los Angeles County 382 31.3±5.4 312 40.8±6.3
 CA-San Bernardino County 145 28.5±8.5 114 31.0±9.2
 CA-San Diego County 228 19.8±5.9 179 36.2±7.9
 CA-Santa Clara County 177 27.7±7.4 154 40.5±8.3
 CA-Northern CA  192 14.4±5.9 154 23.9±7.8
COLORADO 242 22.1±7.7 206 39.0±10.0
CONNECTICUT 303 21.8±5.4 245 37.9±7.0
DELAWARE 252 17.6±5.5 197 33.5±7.9
DISTRICT OF COLUMBIA 354 27.4±5.9 305 40.3±6.7
FLORIDA 947 24.6±4.5 715 35.6±6.0
 FL-Duval County 252 20.7±5.7 188 37.6±7.9
 FL-Miami-Dade County 352 38.4±6.5 278 53.3±7.5
GEORGIA 480 26.9±5.9 379 40.2±7.3
 GA-Fulton/DeKalb Counties 184 35.9±9.1 152 40.6±9.4
HAWAII 283 27.9±6.5 232 38.5±7.5
IDAHO 226 17.7±5.7 187 32.7±7.4
ILLINOIS 663 22.0±4.5 540 34.7±5.7
 IL-City of Chicago 364 33.9±5.7 295 44.8±6.5
INDIANA 603 18.1±4.4 457 29.1±6.2
 IN-Marion County 307 21.6±5.7 229 33.8±8.1
IOWA 229 16.9±5.4 184 32.4±7.5
KANSAS 446 15.4±4.6 349 26.7±5.9
 KS-Eastern KS 184 17.9±6.5 139 37.0±9.4
KENTUCKY 261 14.1±4.7 196 34.8±7.9
LOUISIANA 260 24.0±6.7 176 39.1±9.0
MAINE 226 12.5±4.7 176 22.0±6.2
MARYLAND 445 20.9±5.3 366 35.9±6.7
 MD-Baltimore City 139 21.8±8.6 117 24.5±9.2
MASSACHUSETTS 435 22.2±6.0 369 38.9±7.4
 MA-City of Boston 181 26.3±7.3 156 42.7±8.7
MICHIGAN 413 24.0±5.6 316 36.4±7.1
 MI-City of Detroit 113 42.0±10.5 84 47.6±12.4
MINNESOTA 278 22.0±6.5 211 38.4±8.2
MISSISSIPPI 223 22.8±7.5 151 40.7±9.7
MISSOURI 268 18.0±6.0 204 29.2±7.3
MONTANA 298 15.0±4.9 243 19.9±5.7
NEBRASKA 259 19.4±5.7 199 31.6±7.3
NEVADA 265 30.0±6.2 213 44.5±7.5
NEW HAMPSHIRE 275 15.5±5.2 228 32.4±7.0
NEW JERSEY 494 33.7±6.9 402 46.3±7.6
 NJ-City of Newark 161 42.4±9.7 127 57.7±10.7
NEW MEXICO 447 19.9±5.3 342 32.4±7.0
 NM-Southern NM 161 20.0±7.3 113 30.0±10.0
NEW YORK 612 32.5±4.4 513 47.6±4.9
 NY-NYC 5 Counties 355 39.5±5.9 305 53.6±6.2
NORTH CAROLINA 271 25.7±6.8 211 45.7±8.1
NORTH DAKOTA 277 13.2±4.8 224 26.0±6.5
OHIO 408 17.4±5.0 316 33.7±6.8
 OH-Cuyahoga County 163 18.9±6.4 124 33.2±8.9
OKLAHOMA 291 18.5±5.5 210 33.7±7.5
OREGON 256 20.2±6.0 219 27.7±6.7
PENNSYLVANIA 681 17.0±4.2 533 29.9±5.6
 PA-Philadelphia 189 25.4±7.5 145 41.8±9.4
 PA-Allegheny County 179 20.5±7.6 146 33.6±9.1
RHODE ISLAND 284 20.7±5.8 215 33.0±7.7
SOUTH CAROLINA 318 21.1±5.7 227 32.7±7.5
SOUTH DAKOTA 326 15.9±4.7 250 29.0±6.6
TENNESSEE 475 14.1±4.4 342 27.6±6.9
 TN-Shelby County 206 22.2±6.4 155 35.6±8.8
TEXAS 1520 30.8±4.1 1191 48.9±4.9
 TX-Bexar County 303 28.0±6.4 238 39.5±7.8
 TX-City of Houston 316 42.4±6.1 256 55.0±6.7
 TX-Dallas County 273 32.0±6.4 218 44.6±7.5
 TX-El Paso County 260 28.6±6.0 201 40.4±7.4
UTAH 269 17.1±5.5 228 32.1±7.4
VERMONT 255 13.2±4.9 217 21.3±6.2
VIRGINIA 356 19.0±4.9 286 39.2±6.6
WASHINGTON 681 14.7±3.6 581 28.7±5.1
 WA-King County 149 15.7±7.0 133 29.0±8.9
 WA-Eastern WA 183 20.1±6.4 150 34.9±8.5
 WA-Western WA 93 19.7±8.8 78 30.4±11.0
WEST VIRGINIA 225 17.3±5.7 158 29.0±7.6
WISCONSIN 397 18.1±4.8 311 32.8±7.0
 WI-Milwaukee County 137 25.1±8.6 108 35.9±10.4
WYOMING 302 13.9±4.4 232 22.4±5.7

1Formula supplementation is defined as supplementation of breast milk with formula (with or without other supplementary liquids or solids) among infants breastfed at the age specified (2 days or 3 months). The denominator for the 2 day or 3 month rate is the number of infants breastfeeding at 2 days or 3 months, respectively. Formula supplementation rates at 6 months are not shown by geographic area due to an insufficient number of women breastfeeding at 6 months in many geographic areas.

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 <100 women sampled (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. States with fewer than 100 breastfed infants at 3 months of age are reported on, but the wide confidence interval around the estimate should be noted.