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Approximately 65% of people with Prader-Willi Syndrome are unknown to
PWSA (USA) and not receiving needed services.

State 2010 Census 1:12,000 1:15,000 known % missing
ALABAMA        4,779,736          398          319          83 74%
ALASKA            710,231            59            47          18 62%
ARIZONA        6,392,017          533          426       135 68%
ARKANSAS        2,915,918          243          194          61 69%
CALIFORNIA      37,253,956      3,104      2,484       757 70%
COLORADO        5,029,196          419          335       124 63%
CONNECTICUT        3,574,097          298          238       116 51%
DELAWARE            897,934            75            60          30 50%
DISTRICT OF COLUMBIA            601,723            50            40          16 60%
FLORIDA      18,801,310      1,567      1,253       474 62%
GEORGIA        9,687,653          807          646       206 68%
HAWAII        1,360,301          113            91          24 74%
IDAHO        1,567,582          131          105          47 55%
ILLINOIS      12,830,632      1,069          855       288 66%
INDIANA        6,483,802          540          432       128 70%
IOWA        3,046,355          254          203          78 62%
KANSAS        2,853,118          238          190          77 60%
KENTUCKY        4,339,367          362          289          92 68%
LOUISIANA        4,533,372          378          302          79 74%
MAINE        1,328,361          111            89          42 53%
MARYLAND        5,773,552          481          385       151 61%
MASSACHUSETTS        6,547,629          546          437       187 57%
MICHIGAN        9,883,640          824          659       264 60%
MINNESOTA        5,303,925          442          354       204 42%
MISSISSIPPI        2,967,297          247          198          41 79%
MISSOURI        5,988,927          499          399       158 60%
MONTANA            989,415            82            66          25 62%
NEBRASKA        1,826,341          152          122          57 53%
NEVADA        2,700,551          225          180          52 71%
NEW HAMPSHIRE        1,316,470          110            88          39 56%
NEW JERSEY        8,791,894          733          586       244 58%
NEW MEXICO        2,059,179          172          137          72 48%
NEW YORK      19,378,102      1,615      1,292       429 67%
NORTH CAROLINA        9,535,483          795          636       190 70%
NORTH DAKOTA            672,591            56            45          21 53%
OHIO      11,536,504          961          769       309 60%
OKLAHOMA        3,751,351          313          250          99 60%
OREGON        3,831,074          319          255       107 58%
PENNSYLVANIA      12,702,379      1,059          847       333 61%
RHODE ISLAND        1,052,567            88            70          27 62%
SOUTH CAROLINA        4,625,364          385          308          76 75%
SOUTH DAKOTA            814,180            68            54          24 56%
TENNESSEE        6,346,105          529          423       130 69%
TEXAS      25,145,561      2,095      1,676       435 74%
UTAH        2,763,885          230          184          77 58%
VERMONT            625,741            52            42          16 62%
VIRGINIA        8,001,024          667          533       178 67%
WASHINGTON        6,724,540          560          448       175 61%
WEST VIRGINIA        1,852,994          154          124          47 62%
WISCONSIN        5,686,986          474          379       146 61%
WYOMING            563,626            47            38          18 52%
   308,745,538    25,729    20,583    7,206 65%
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