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779 area code

Area code 779 is in Illinois (IL), USA and some of the main locations covered are Joliet, Dekalb, Crystal Lake, .. (jump to city list below).

Area code 779 has been in service since 17 March 2007 and is an overlay code part of overlay complex 815/779 (overlaying area codes cover the same geographic area).

08:16:25 AM is the current time in area code 779 (Central Time).

Reverse phone lookup

Map of area code 779

More Illinois area codes

List of 779-NXX prefixes and corresponding locations

NPANXX¹	Area served²	Date³

779-200	Rockford	1/18/2011
779-201	La Salle	3/15/2012
779-202	Galena	3/6/2012
779-203	Rockford	10/13/2011
779-204	Verona	3/19/2014
779-205	Joliet	5/30/2012
779-206	Joliet	6/20/2012
779-207	Rockford
779-208	Rockford	11/16/2012
779-209	Sandwich	8/31/2012
779-210	Rockford	9/16/2011
779-212	De Kalb	3/13/2013
779-213	Oglesby	4/9/2013
779-214	Galena	12/17/2009
779-215	Tonica	4/9/2013
779-216	Frankfort	4/9/2013
779-218	Watseka	4/9/2013
779-220	Crystal Lake	5/25/2011
779-221	Rockford	4/2/2010
779-222	Sycamore	8/5/2010
779-223	Onarga	3/23/2016
779-225	Joliet	9/21/2011
779-226	Polo	4/24/2013
779-227	Joliet	7/1/2014
779-228	Mazon	4/10/2013
779-229	Depue	5/7/2013
779-230	Joliet	9/28/2016
779-231	Joliet	12/21/2015
779-232	Wilmington	6/7/2007
779-233	Joliet	7/21/2011
779-234	Plainfield	8/1/2013
779-235	Crescent City	2/4/2011
779-236	Kankakee	7/27/2011
779-237	Streator	1/8/2018
779-238	Rockford	4/4/2017
779-239	Princeton	1/14/2016
779-240	Kankakee	6/11/2014
779-241	Morris	6/1/2017
779-242	Joliet	10/5/2017
779-243	Frankfort	10/5/2017
779-244	Mchenry	10/5/2017
779-245	Sterling	7/14/2008
779-246	Rochelle	10/23/2017
779-247	Woodstock	12/1/2017
779-248	Galena	6/3/2016
779-249	Dwight	2/22/2018
779-250	Sterling	2/27/2018
779-251	Dixon	4/1/2014
779-252	Plainfield	1/6/2016
779-253	South Beloit	10/7/2014
779-254	Frankfort	9/1/2015
779-255	De Kalb	5/16/2018
779-256	Rockford	6/5/2018
779-257	Wilmington	7/11/2018
779-258	Herscher	8/27/2018
779-259	Manteno	8/27/2018
779-260	Joliet	10/8/2018
779-261	Fairbury	11/30/2018
779-262	Oglesby	12/5/2018
779-263	Plainfield	1/2/2018
779-264	Kankakee	10/7/2019
779-265	Mchenry	10/8/2019
779-266	Lanark	12/9/2019
779-267	Joliet	1/17/2020
779-268	St Anne	2/6/2020
779-269	Rockford	2/10/2020
779-270	De Kalb	2/19/2020
779-271	Lanark	4/29/2020
779-272	Rockford	5/1/2020
779-273	Danforth	5/28/2020
779-274	Rockford	6/26/2020
779-275	Rockford	7/28/2020
779-276	De Kalb	7/28/2020
779-277	Flanagan	8/12/2020
779-278	Grand Ridge	3/18/2021
779-279	Joliet	10/29/2008
779-280	Donovan	8/25/2020
779-281	Toluca	8/12/2020
779-282	Martinton	8/25/2020
779-283	Richmond	8/25/2020
779-284	Sheldon	8/25/2020
779-285	Sheridan	8/25/2020
779-286	Spring Grove	8/25/2020
779-287	Union	3/24/2016
779-288	Beaverville	6/2/2021
779-289	South Beloit	9/1/2020
779-290	Milford	9/2/2020
779-291	Wonder Lake	9/4/2020
779-292	Onarga	9/4/2020
779-293	New Lenox	9/4/2020
779-294	Harding	9/4/2020
779-295	Mazon	9/4/2020
779-296	Long Point	9/8/2020
779-297	Sterling	9/15/2020
779-298	Forrest	9/15/2020
779-299	Wenona	9/17/2020
779-300	Rockford	2/17/2011
779-301	Kankakee	6/11/2014
779-302	Woodstock	2/27/2015
779-303	Plainfield
779-304	Rutland	9/17/2020
779-305	Reddick	9/17/2020
779-306	Pontiac	9/17/2020
779-307	Lostant	9/17/2020
779-308	Chatsworth	9/17/2020
779-310	New Milford	9/17/2020
779-313	Cherry Valley	9/17/2020
779-314	Rock Cut	9/17/2020
779-315	Roscoe	9/17/2020
779-316	Creston	9/17/2020
779-317	Kirkland	9/17/2020
779-318	Malta	9/17/2020
779-319	Maple Park	9/17/2020
779-320	Monroe Center	9/17/2020
779-321	Shabbona	9/17/2020
779-322	Thomas	9/17/2020
779-323	Rockford	9/30/2020
779-324	Frankfort	8/17/2010
779-325	Franklin Grove	11/25/2020
779-326	Dwight	12/10/2020
779-327	Warren	6/10/2021
779-328	Hanover	6/10/2021
779-329	Mendota	6/10/2021
779-330	Belvidere	6/22/2021
779-332	Durand	6/10/2021
779-333	Frankfort	4/11/2013
779-334	De Kalb	11/4/2020
779-335	Rockford	6/23/2021
779-336	Woodstock	2/10/2021
779-337	Woodland	6/24/2021
779-338	Crescent City	6/24/2021
779-339	Frankfort	10/19/2021
779-340	Coal City	11/22/2021
779-341	Joliet	12/29/2021
779-342	Dwight	7/14/2021
779-343	German Valley	11/4/2021
779-344	Seward	11/4/2021
779-345	Byron	7/27/2020
779-346	Capron	9/18/2020
779-347	Winslow	11/4/2021
779-348	Rockford	6/13/2007
779-349	Spring Valley	1/11/2022
779-350	Dixon	1/14/2022
779-351	Rockford	2/25/2022
779-352	Waterman	1/28/2022
779-353	Forreston	3/31/2022
779-354	Davis	3/31/2022
779-355	Harmon	3/31/2022
779-356	Crystal Lake	7/14/2020
779-357	Leaf River	4/12/2022
779-368	New Milford	8/21/2007
779-377	South Beloit	9/13/2021
779-379	Joliet	10/29/2008
779-382	Genoa	5/7/2007
779-389	Garden Prairie	4/19/2021
779-399	Kinsman	1/8/2021
779-400	De Kalb	2/17/2011
779-410	Stockton	3/30/2021
779-423	Rockford	8/8/2007
779-426	Manhattan	1/13/2022
779-429	Wilmington	11/13/2008
779-432	Sheffield	3/27/2007
779-435	Joliet	11/13/2006
779-444	Wonder Lake	8/17/2010
779-456	Joliet	1/9/2008
779-463	Morris	3/23/2022
779-465	Braidwood	10/10/2019
779-466	Emington	1/26/2022
779-475	South Beloit	3/27/2007
779-479	Graymont	4/18/2021
779-499	Freeport	9/13/2021
779-500	Rockford	3/16/2011
779-513	Rockford	10/16/2015
779-529	Manteno	8/17/2010
779-537	Rockford	3/27/2007
779-545	Mount Morris	8/8/2007
779-548	Marengo	8/16/2010
779-552	Belvidere	6/4/2007
779-577	Rockford	9/13/2021
779-579	Kempton	4/18/2021
779-599	Paw Paw	7/14/2020
779-600	Cissna Park	8/8/2019
779-601	La Salle	9/10/2014
779-624	Momence	1/13/2022
779-625	Woodstock	2/23/2022
779-639	Mchenry	1/13/2022
779-666	Rockford	10/3/2017
779-675	Ohio	1/13/2022
779-677	Freeport	7/27/2020
779-678	Rockford	1/12/2021
779-679	Magnolia	4/18/2021
779-696	Rockford	8/18/2010
779-699	South Beloit	7/17/2020
779-701	Kankakee	1/28/2015
779-702	Joliet	6/11/2014
779-703	Joliet	10/7/2013
779-704	Mchenry	10/31/2013
779-706	Sandwich	2/24/2015
779-707	Joliet	4/21/2015
779-710	Rockford	3/18/2021
779-713	Woodstock	5/22/2015
779-717	Spring Valley	10/15/2015
779-722	Ashton	9/18/2020
779-729	Lena	4/13/2021
779-732	La Salle	2/10/2021
779-739	Forrest	2/14/2022
779-746	Cissna Park	1/13/2022
779-749	Steward	4/13/2021
779-758	Joliet	10/11/2019
779-759	Sycamore	4/13/2021
779-766	Depue	7/14/2020
779-770	Rockford	11/18/2008
779-771	Rockford	11/18/2008
779-772	Rockford	11/18/2008
779-774	Rockford	2/1/2012
779-775	De Kalb	9/13/2021
779-777	De Kalb	10/22/2008
779-778	Winnebago	5/28/2020
779-783	Stockland	1/13/2022
779-788	Pecatonica	1/28/2021
779-789	Rockton	4/19/2021
779-797	Rockford	9/23/2021
779-799	Coleta	7/27/2020
779-800	Crystal Lake	4/11/2013
779-801	Kankakee	9/7/2016
779-803	New Lenox	8/16/2013
779-804	Pontiac	2/24/2015
779-809	Fulton	3/28/2022
779-832	Cedar Point	1/13/2022
779-837	Elwood	1/7/2022
779-855	Forrest	3/31/2021
779-861	Dixon	5/26/2010
779-867	Rockford	4/12/2021
779-875	Joliet	7/12/2007
779-877	Verona	7/14/2020
779-879	Streator	4/18/2021
779-888	Rockford	1/28/2015
779-895	Rockford	2/1/2022
779-899	Lisbon	7/14/2020
779-900	Frankfort	9/17/2019
779-901	Marengo	4/30/2015
779-902	De Kalb	3/19/2021
779-903	Braidwood	7/29/2013
779-904	Freeport	3/24/2021
779-910	De Kalb	3/18/2021
779-915	Woodstock	11/16/2016
779-922	Hooppole	7/27/2020
779-927	Marengo	1/13/2022
779-931	Sandwich	10/27/2016
779-933	Hinckley	7/27/2020
779-939	Joliet	2/3/2016
779-946	Granville	7/14/2020
779-970	Rockford	9/14/2015
779-977	Harvard	7/14/2020
779-978	Sandwich	6/4/2015
779-979	Piper City	4/19/2021
779-990	Forrest	4/12/2021
779-991	Leland	8/12/2020
779-994	Crystal Lake	4/10/2013
779-997	Plattville	1/13/2022
779-999	Newark	9/24/2010

The NPA is the Numbering Plan Area (area code) and NXX is the central office code.
For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
The assignment date. If no date is shown the exchange code was assigned before 2001.

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List of cities in area code 779

City⁴	County	Time⁵
Alden	McHenry	C
Amboy	Lee	C
Ancona	Livingston	C
Apple River	Jo Daviess	C
Arlington	Bureau	C
Aroma Park	Kankakee	C
Ashkum	Iroquois	C
Ashton	Lee	C
Baileyville	Ogle	C
Beaverville	Iroquois	C
Belvidere	Boone	C
Blackstone	Livingston	C
Bonfield	Kankakee	C
Bourbonnais	Kankakee	C
Braceville	Grundy	C
Bradley	Kankakee	C
Braidwood	Will	C
Buckingham	Kankakee	C
Bureau	Bureau	C
Byron	Ogle	C
Cabery	Ford	C
Caledonia	Boone	C
Campus	Livingston	C
Capron	Boone	C
Cedar Point	La Salle	C
Cedarville	Stephenson	C
Chadwick	Carroll	C
Chana	Ogle	C
Channahon	Will	C
Chatsworth	Livingston	C
Chebanse	Iroquois	C
Chenoa	McLean	C
Cherry	Bureau	C
Cherry Valley	Winnebago	C
Cissna Park	Iroquois	C
Clare	Dekalb	C
Claytonville	Iroquois	C
Clifton	Iroquois	C
Coal City	Grundy	C
Compton	Lee	C
Cornell	Livingston	C
Cortland	Dekalb	C
Crescent City	Iroquois	C
Creston	Ogle	C
Crystal Lake	McHenry	C
Cullom	Livingston	C
Dakota	Stephenson	C
Dalzell	Bureau	C
Dana	La Salle	C
Danforth	Iroquois	C
Davis	Stephenson	C
Davis Junction	Ogle	C
Deer Grove	Whiteside	C
Dekalb	Dekalb	C
Depue	Bureau	C
Dixon	Lee	C
Donovan	Iroquois	C
Dover	Bureau	C
Durand	Winnebago	C
Dwight	Livingston	C
Earlville	La Salle	C
East Dubuque	Jo Daviess	C
Eldena	Lee	C
Eleroy	Stephenson	C
Elizabeth	Jo Daviess	C
Elwood	Will	C
Emington	Livingston	C
Esmond	Dekalb	C
Essex	Kankakee	C
Fairbury	Livingston	C
Flanagan	Livingston	C
Forrest	Livingston	C
Forreston	Ogle	C
Frankfort	Will	C
Franklin Grove	Lee	C
Freeport	Stephenson	C
Fulton	Whiteside	C
Galena	Jo Daviess	C
Galt	Whiteside	C
Garden Prairie	Boone	C
Gardner	Grundy	C
Genoa	Dekalb	C
German Valley	Stephenson	C
Gilman	Iroquois	C
Goodwine	Iroquois	C
Grand Ridge	La Salle	C
Grant Park	Kankakee	C
Granville	Putnam	C
Graymont	Livingston	C
Hanover	Jo Daviess	C
Harmon	Lee	C
Harvard	McHenry	C
Hebron	McHenry	C
Hennepin	Putnam	C
Herscher	Kankakee	C
Hinckley	Dekalb	C
Holcomb	Ogle	C
Homer Glen	Will	C
Hooppole	Henry	C
Hopkins Park	Kankakee	C
Iroquois	Iroquois	C
Joliet	Will	C
Kankakee	Kankakee	C
Kasbeer	Bureau	C
Kempton	Ford	C
Kent	Stephenson	C
Kingston	Dekalb	C
Kinsman	Grundy	C
Kirkland	Dekalb	C
La Moille	Bureau	C
La Salle	La Salle	C
Ladd	Bureau	C
Lanark	Carroll	C
Leaf River	Ogle	C
Lee	Lee	C
Lee Center	Lee	C
Leland	La Salle	C
Lena	Stephenson	C
Leonore	La Salle	C
Lindenwood	Ogle	C
Lockport	Will	C
Long Point	Livingston	C
Lostant	La Salle	C
Loves Park	Winnebago	C
Lyndon	Whiteside	C
Machesney Park	Winnebago	C
Magnolia	Putnam	C
Malden	Bureau	C
Malta	Dekalb	C
Manhattan	Will	C
Manlius	Bureau	C
Manteno	Kankakee	C
Maple Park	Kane	C
Marengo	McHenry	C
Mark	Putnam	C
Marseilles	La Salle	C
Martinton	Iroquois	C
Mazon	Grundy	C
Mc Connell	Stephenson	C
Mc Nabb	Putnam	C
McHenry	McHenry	C
Mendota	La Salle	C
Milford	Iroquois	C
Milledgeville	Carroll	C
Millington	Kendall	C
Minooka	Grundy	C
Momence	Kankakee	C
Monroe Center	Ogle	C
Morris	Grundy	C
Morrison	Whiteside	C
Mount Carroll	Carroll	C
Mount Morris	Ogle	C
Nachusa	Lee	C
New Bedford	Bureau	C
New Lenox	Will	C
Newark	Kendall	C
Nora	Jo Daviess	C
Odell	Livingston	C
Oglesby	La Salle	C
Ohio	Bureau	C
Onarga	Iroquois	C
Orangeville	Stephenson	C
Oregon	Ogle	C
Ottawa	La Salle	C
Papineau	Iroquois	C
Paw Paw	Lee	C
Pearl City	Stephenson	C
Pecatonica	Winnebago	C
Peru	La Salle	C
Piper City	Ford	C
Plainfield	Will	C
Polo	Ogle	C
Pontiac	Livingston	C
Poplar Grove	Boone	C
Princeton	Bureau	C
Prophetstown	Whiteside	C
Putnam	Putnam	C
Ransom	La Salle	C
Reddick	Kankakee	C
Richmond	McHenry	C
Ridott	Stephenson	C
Ringwood	McHenry	C
Rochelle	Ogle	C
Rock City	Stephenson	C
Rock Falls	Whiteside	C
Rockford	Winnebago	C
Rockton	Winnebago	C
Romeoville	Will	C
Roscoe	Winnebago	C
Rutland	La Salle	C
Sandwich	Dekalb	C
Saunemin	Livingston	C
Savanna	Carroll	C
Scales Mound	Jo Daviess	C
Seatonville	Bureau	C
Seneca	La Salle	C
Serena	La Salle	C
Seward	Winnebago	C
Shabbona	Dekalb	C
Shannon	Carroll	C
Sheffield	Bureau	C
Sheldon	Iroquois	C
Sheridan	La Salle	C
Shirland	Winnebago	C
Somonauk	Dekalb	C
South Beloit	Winnebago	C
South Wilmington	Grundy	C
Spring Grove	McHenry	C
Spring Valley	Bureau	C
St Anne	Kankakee	C
Standard	Putnam	C
Sterling	Whiteside	C
Steward	Lee	C
Stillman Valley	Ogle	C
Stockland	Iroquois	C
Stockton	Jo Daviess	C
Strawn	Livingston	C
Streator	La Salle	C
Sublette	Lee	C
Sycamore	Dekalb	C
Tampico	Whiteside	C
Thomson	Carroll	C
Tiskilwa	Bureau	C
Toluca	Marshall	C
Tonica	La Salle	C
Triumph	La Salle	C
Troy Grove	La Salle	C
Union	McHenry	C
Union Hill	Kankakee	C
Utica	La Salle	C
Van Orin	Bureau	C
Verona	Grundy	C
Walnut	Bureau	C
Warren	Jo Daviess	C
Waterman	Dekalb	C
Watseka	Iroquois	C
Wedron	La Salle	C
Wellington	Iroquois	C
Wenona	Marshall	C
West Brooklyn	Lee	C
Wilmington	Will	C
Winnebago	Winnebago	C
Winslow	Stephenson	C
Wonder Lake	McHenry	C
Woodland	Iroquois	C
Woodstock	McHenry	C
Woosung	Ogle	C
Wyanet	Bureau	C

Listed in the table above are most, often not all places served by area code 779. When two or more places with the same name are located in the same state we list the largest one only. Cities with population over 50,000 are displayed in bold text.
C stands for Central Time (currently 08:16:25 AM).

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