Io ho trovato solo le sigle delle province 
Prima magari gli fai inserire il nome del Comune di Residenza 
Codice PHP:
<select name=PROVINCIA>
<option value="" selected> </option>
<option value="AG">AG</option>
<option value="AL">AL</option>
<option value="AN">AN</option>
<option value="AO">AO</option>
<option value="AP">AP</option>
<option value="AQ">AQ</option>
<option value="AR">AR</option>
<option value="AT">AT</option>
<option value="AV">AV</option>
<option value="BA">BA</option>
<option value="BG">BG</option>
<option value="BI">BI</option>
<option value="BL">BL</option>
<option value="BN">BN</option>
<option value="BO">BO</option>
<option value="BR">BR</option>
<option value="BS">BS</option>
<option value="BZ">BZ</option>
<option value="CA">CA</option>
<option value="CB">CB</option>
<option value="CE">CE</option>
<option value="CH">CH</option>
<option value="CL">CL</option>
<option value="CN">CN</option>
<option value="CO">CO</option>
<option value="CR">CR</option>
<option value="CS">CS</option>
<option value="CT">CT</option>
<option value="CZ">CZ</option>
<option value="EE">EE</option>
<option value="EN">EN</option>
<option value="FC">FC</option>
<option value="FE">FE</option>
<option value="FG">FG</option>
<option value="FI">FI</option>
<option value="FO">FO</option>
<option value="FR">FR</option>
<option value="GE">GE</option>
<option value="GO">GO</option>
<option value="GR">GR</option>
<option value="IM">IM</option>
<option value="IS">IS</option>
<option value="KR">KR</option>
<option value="LC">LC</option>
<option value="LE">LE</option>
<option value="LI">LI</option>
<option value="LO">LO</option>
<option value="LT">LT</option>
<option value="LU">LU</option>
<option value="MC">MC</option>
<option value="ME">ME</option>
<option value="MI">MI</option>
<option value="MN">MN</option>
<option value="MO">MO</option>
<option value="MS">MS</option>
<option value="MT">MT</option>
<option value="NA">NA</option>
<option value="NO">NO</option>
<option value="NU">NU</option>
<option value="OR">OR</option>
<option value="PA">PA</option>
<option value="PC">PC</option>
<option value="PD">PD</option>
<option value="PE">PE</option>
<option value="PG">PG</option>
<option value="PI">PI</option>
<option value="PN">PN</option>
<option value="PO">PO</option>
<option value="PR">PR</option>
<option value="PS">PS</option>
<option value="PT">PT</option>
<option value="PU">PU</option>
<option value="PV">PV</option>
<option value="PZ">PZ</option>
<option value="RA">RA</option>
<option value="RC">RC</option>
<option value="RE">RE</option>
<option value="RG">RG</option>
<option value="RI">RI</option>
<option value="RM">RM</option>
<option value="RN">RN</option>
<option value="RO">RO</option>
<option value="SA">SA</option>
<option value="SI">SI</option>
<option value="SO">SO</option>
<option value="SP">SP</option>
<option value="SR">SR</option>
<option value="SS">SS</option>
<option value="SV">SV</option>
<option value="TA">TA</option>
<option value="TE">TE</option>
<option value="TN">TN</option>
<option value="TO">TO</option>
<option value="TP">TP</option>
<option value="TR">TR</option>
<option value="TS">TS</option>
<option value="TV">TV</option>
<option value="UD">UD</option>
<option value="VA">VA</option>
<option value="VB">VB</option>
<option value="VC">VC</option>
<option value="VE">VE</option>
<option value="VI">VI</option>
<option value="VR">VR</option>
<option value="VT">VT</option>
<option value="VV">VV</option>
</select>
Spero di esserti stato utile