I guess a lot of people search for this list and very less get successful finding the list. I also required world's all

1. Csv Email List
2. Country State City List Csv Download Options
3. Us State List Csv

List of State Abbreviations (Download CSV, JSON) A Brief History on State Abbreviations and Postal Codes If you are like most people, the chances are good that nowadays, you hardly ever write an address on an envelope and put it in the mail. Download demo.csv files starting from 10 rows up to almost half a million rows. Select the one that goes well with your requirements. You can even find options dealing with.csv files that can store records, data or values with 100, 1000, 5000, 10000, 50000, and 100000 rows.

Country and corresponding City or states for binding the drop down from sql server one of my project. i searched a lot and finally found a very good list, with the approved codes etc. you can use Ajax or anything after importing it to your database in required format in you any of oracle, mysql, access, sql-server, postgresql.
here's Updated link.
http://www.unece.org/cefact/codesfortrade/codes_index.html
above link is for download, below link is for details of various terminologies used.
http://www.unece.org/cefact/locode/welcome.html
on the page you will get list in various acceptable formats from

• txt
• CSV
• excel
• mdb.

Csv Email List

as there is no just download latest file which is on the top of the list and import it to your database.
its very detailed and informative list even got longitude details, district, state, city. so you can drill down to very depth or very less according to your requirements
my best to share the information as far as possible.

Country State City List Csv Download Options

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Us State List Csv

country	latitude	longitude	name
AD	42.546245	1.601554	Andorra
AE	23.424076	53.847818	United Arab Emirates
AF	33.93911	67.709953	Afghanistan
AG	17.060816	-61.796428	Antigua and Barbuda
AI	18.220554	-63.068615	Anguilla
AL	41.153332	20.168331	Albania
AM	40.069099	45.038189	Armenia
AN	12.226079	-69.060087	Netherlands Antilles
AO	-11.202692	17.873887	Angola
AQ	-75.250973	-0.071389	Antarctica
AR	-38.416097	-63.616672	Argentina
AS	-14.270972	-170.132217	American Samoa
AT	47.516231	14.550072	Austria
AU	-25.274398	133.775136	Australia
AW	12.52111	-69.968338	Aruba
AZ	40.143105	47.576927	Azerbaijan
BA	43.915886	17.679076	Bosnia and Herzegovina
BB	13.193887	-59.543198	Barbados
BD	23.684994	90.356331	Bangladesh
BE	50.503887	4.469936	Belgium
BF	12.238333	-1.561593	Burkina Faso
BG	42.733883	25.48583	Bulgaria
BH	25.930414	50.637772	Bahrain
BI	-3.373056	29.918886	Burundi
BJ	9.30769	2.315834	Benin
BM	32.321384	-64.75737	Bermuda
BN	4.535277	114.727669	Brunei
BO	-16.290154	-63.588653	Bolivia
BR	-14.235004	-51.92528	Brazil
BS	25.03428	-77.39628	Bahamas
BT	27.514162	90.433601	Bhutan
BV	-54.423199	3.413194	Bouvet Island
BW	-22.328474	24.684866	Botswana
BY	53.709807	27.953389	Belarus
BZ	17.189877	-88.49765	Belize
CA	56.130366	-106.346771	Canada
CC	-12.164165	96.870956	Cocos [Keeling] Islands
CD	-4.038333	21.758664	Congo [DRC]
CF	6.611111	20.939444	Central African Republic
CG	-0.228021	15.827659	Congo [Republic]
CH	46.818188	8.227512	Switzerland
CI	7.539989	-5.54708	Côte d'Ivoire
CK	-21.236736	-159.777671	Cook Islands
CL	-35.675147	-71.542969	Chile
CM	7.369722	12.354722	Cameroon
CN	35.86166	104.195397	China
CO	4.570868	-74.297333	Colombia
CR	9.748917	-83.753428	Costa Rica
CU	21.521757	-77.781167	Cuba
CV	16.002082	-24.013197	Cape Verde
CX	-10.447525	105.690449	Christmas Island
CY	35.126413	33.429859	Cyprus
CZ	49.817492	15.472962	Czech Republic
DE	51.165691	10.451526	Germany
DJ	11.825138	42.590275	Djibouti
DK	56.26392	9.501785	Denmark
DM	15.414999	-61.370976	Dominica
DO	18.735693	-70.162651	Dominican Republic
DZ	28.033886	1.659626	Algeria
EC	-1.831239	-78.183406	Ecuador
EE	58.595272	25.013607	Estonia
EG	26.820553	30.802498	Egypt
EH	24.215527	-12.885834	Western Sahara
ER	15.179384	39.782334	Eritrea
ES	40.463667	-3.74922	Spain
ET	9.145	40.489673	Ethiopia
FI	61.92411	25.748151	Finland
FJ	-16.578193	179.414413	Fiji
FK	-51.796253	-59.523613	Falkland Islands [Islas Malvinas]
FM	7.425554	150.550812	Micronesia
FO	61.892635	-6.911806	Faroe Islands
FR	46.227638	2.213749	France
GA	-0.803689	11.609444	Gabon
GB	55.378051	-3.435973	United Kingdom
GD	12.262776	-61.604171	Grenada
GE	42.315407	43.356892	Georgia
GF	3.933889	-53.125782	French Guiana
GG	49.465691	-2.585278	Guernsey
GH	7.946527	-1.023194	Ghana
GI	36.137741	-5.345374	Gibraltar
GL	71.706936	-42.604303	Greenland
GM	13.443182	-15.310139	Gambia
GN	9.945587	-9.696645	Guinea
GP	16.995971	-62.067641	Guadeloupe
GQ	1.650801	10.267895	Equatorial Guinea
GR	39.074208	21.824312	Greece
GS	-54.429579	-36.587909	South Georgia and the South Sandwich Islands
GT	15.783471	-90.230759	Guatemala
GU	13.444304	144.793731	Guam
GW	11.803749	-15.180413	Guinea-Bissau
GY	4.860416	-58.93018	Guyana
GZ	31.354676	34.308825	Gaza Strip
HK	22.396428	114.109497	Hong Kong
HM	-53.08181	73.504158	Heard Island and McDonald Islands
HN	15.199999	-86.241905	Honduras
HR	45.1	15.2	Croatia
HT	18.971187	-72.285215	Haiti
HU	47.162494	19.503304	Hungary
ID	-0.789275	113.921327	Indonesia
IE	53.41291	-8.24389	Ireland
IL	31.046051	34.851612	Israel
IM	54.236107	-4.548056	Isle of Man
IN	20.593684	78.96288	India
IO	-6.343194	71.876519	British Indian Ocean Territory
IQ	33.223191	43.679291	Iraq
IR	32.427908	53.688046	Iran
IS	64.963051	-19.020835	Iceland
IT	41.87194	12.56738	Italy
JE	49.214439	-2.13125	Jersey
JM	18.109581	-77.297508	Jamaica
JO	30.585164	36.238414	Jordan
JP	36.204824	138.252924	Japan
KE	-0.023559	37.906193	Kenya
KG	41.20438	74.766098	Kyrgyzstan
KH	12.565679	104.990963	Cambodia
KI	-3.370417	-168.734039	Kiribati
KM	-11.875001	43.872219	Comoros
KN	17.357822	-62.782998	Saint Kitts and Nevis
KP	40.339852	127.510093	North Korea
KR	35.907757	127.766922	South Korea
KW	29.31166	47.481766	Kuwait
KY	19.513469	-80.566956	Cayman Islands
KZ	48.019573	66.923684	Kazakhstan
LA	19.85627	102.495496	Laos
LB	33.854721	35.862285	Lebanon
LC	13.909444	-60.978893	Saint Lucia
LI	47.166	9.555373	Liechtenstein
LK	7.873054	80.771797	Sri Lanka
LR	6.428055	-9.429499	Liberia
LS	-29.609988	28.233608	Lesotho
LT	55.169438	23.881275	Lithuania
LU	49.815273	6.129583	Luxembourg
LV	56.879635	24.603189	Latvia
LY	26.3351	17.228331	Libya
MA	31.791702	-7.09262	Morocco
MC	43.750298	7.412841	Monaco
MD	47.411631	28.369885	Moldova
ME	42.708678	19.37439	Montenegro
MG	-18.766947	46.869107	Madagascar
MH	7.131474	171.184478	Marshall Islands
MK	41.608635	21.745275	Macedonia [FYROM]
ML	17.570692	-3.996166	Mali
MM	21.913965	95.956223	Myanmar [Burma]
MN	46.862496	103.846656	Mongolia
MO	22.198745	113.543873	Macau
MP	17.33083	145.38469	Northern Mariana Islands
MQ	14.641528	-61.024174	Martinique
MR	21.00789	-10.940835	Mauritania
MS	16.742498	-62.187366	Montserrat
MT	35.937496	14.375416	Malta
MU	-20.348404	57.552152	Mauritius
MV	3.202778	73.22068	Maldives
MW	-13.254308	34.301525	Malawi
MX	23.634501	-102.552784	Mexico
MY	4.210484	101.975766	Malaysia
MZ	-18.665695	35.529562	Mozambique
NA	-22.95764	18.49041	Namibia
NC	-20.904305	165.618042	New Caledonia
NE	17.607789	8.081666	Niger
NF	-29.040835	167.954712	Norfolk Island
NG	9.081999	8.675277	Nigeria
NI	12.865416	-85.207229	Nicaragua
NL	52.132633	5.291266	Netherlands
NO	60.472024	8.468946	Norway
NP	28.394857	84.124008	Nepal
NR	-0.522778	166.931503	Nauru
NU	-19.054445	-169.867233	Niue
NZ	-40.900557	174.885971	New Zealand
OM	21.512583	55.923255	Oman
PA	8.537981	-80.782127	Panama
PE	-9.189967	-75.015152	Peru
PF	-17.679742	-149.406843	French Polynesia
PG	-6.314993	143.95555	Papua New Guinea
PH	12.879721	121.774017	Philippines
PK	30.375321	69.345116	Pakistan
PL	51.919438	19.145136	Poland
PM	46.941936	-56.27111	Saint Pierre and Miquelon
PN	-24.703615	-127.439308	Pitcairn Islands
PR	18.220833	-66.590149	Puerto Rico
PS	31.952162	35.233154	Palestinian Territories
PT	39.399872	-8.224454	Portugal
PW	7.51498	134.58252	Palau
PY	-23.442503	-58.443832	Paraguay
QA	25.354826	51.183884	Qatar
RE	-21.115141	55.536384	Réunion
RO	45.943161	24.96676	Romania
RS	44.016521	21.005859	Serbia
RU	61.52401	105.318756	Russia
RW	-1.940278	29.873888	Rwanda
SA	23.885942	45.079162	Saudi Arabia
SB	-9.64571	160.156194	Solomon Islands
SC	-4.679574	55.491977	Seychelles
SD	12.862807	30.217636	Sudan
SE	60.128161	18.643501	Sweden
SG	1.352083	103.819836	Singapore
SH	-24.143474	-10.030696	Saint Helena
SI	46.151241	14.995463	Slovenia
SJ	77.553604	23.670272	Svalbard and Jan Mayen
SK	48.669026	19.699024	Slovakia
SL	8.460555	-11.779889	Sierra Leone
SM	43.94236	12.457777	San Marino
SN	14.497401	-14.452362	Senegal
SO	5.152149	46.199616	Somalia
SR	3.919305	-56.027783	Suriname
ST	0.18636	6.613081	São Tomé and Príncipe
SV	13.794185	-88.89653	El Salvador
SY	34.802075	38.996815	Syria
SZ	-26.522503	31.465866	Swaziland
TC	21.694025	-71.797928	Turks and Caicos Islands
TD	15.454166	18.732207	Chad
TF	-49.280366	69.348557	French Southern Territories
TG	8.619543	0.824782	Togo
TH	15.870032	100.992541	Thailand
TJ	38.861034	71.276093	Tajikistan
TK	-8.967363	-171.855881	Tokelau
TL	-8.874217	125.727539	Timor-Leste
TM	38.969719	59.556278	Turkmenistan
TN	33.886917	9.537499	Tunisia
TO	-21.178986	-175.198242	Tonga
TR	38.963745	35.243322	Turkey
TT	10.691803	-61.222503	Trinidad and Tobago
TV	-7.109535	177.64933	Tuvalu
TW	23.69781	120.960515	Taiwan
TZ	-6.369028	34.888822	Tanzania
UA	48.379433	31.16558	Ukraine
UG	1.373333	32.290275	Uganda
UM	U.S. Minor Outlying Islands
US	37.09024	-95.712891	United States
UY	-32.522779	-55.765835	Uruguay
UZ	41.377491	64.585262	Uzbekistan
VA	41.902916	12.453389	Vatican City
VC	12.984305	-61.287228	Saint Vincent and the Grenadines
VE	6.42375	-66.58973	Venezuela
VG	18.420695	-64.639968	British Virgin Islands
VI	18.335765	-64.896335	U.S. Virgin Islands
VN	14.058324	108.277199	Vietnam
VU	-15.376706	166.959158	Vanuatu
WF	-13.768752	-177.156097	Wallis and Futuna
WS	-13.759029	-172.104629	Samoa
XK	42.602636	20.902977	Kosovo
YE	15.552727	48.516388	Yemen
YT	-12.8275	45.166244	Mayotte
ZA	-30.559482	22.937506	South Africa
ZM	-13.133897	27.849332	Zambia
ZW	-19.015438	29.154857	Zimbabwe