for the translation of the old english word nicor see water monster . nicor gas type subsidiary industry gas utilities founded 1953 headquarters naperville illinois united states owner agl resources website 1 nicor gas is an energy company headquartered in naperville illinois . its largest subsidiary nicor gas is a natural gas distribution company . founded in 1954 the company serves more than two million customers in a service territory that encompasses most of the northern third of illinois excluding the city of chicago . nicor has 32 000 miles 51 000 km of pipelines . agl resources announced its acquisition of nicor in december 2010 . 1 southern company announced its acquisition of agl in 2016 . see also edit fixed bill references edit about nicor inc. . retrieved 2006 11 07 . external links and sources edit nicor retail unbundling illinois . energy information administration . retrieved 2007 03 05 . v t e illinois based corporations fortune 500 corporations by size 2013 walgreens boots alliance archer daniels midland boeing caterpillar inc. state farm insurance abbott laboratories sears holdings united continental holdings deere & company mondel z international allstate mcdonald s exelon kraft heinz illinois tool works baxter international navistar international rr donnelley cdw hillshire brands discover financial w. w. grainger motorola solutions dover corporation tenneco officemax ingredion anixter cf industries holdings telephone and data systems united stationers old republic international other major public companies alphabetically abbvie acco brands accretive health allscripts amcol international corporation arthur j. gallagher & co. beam inc. brookdale senior living brunswick corporation calamos career education corporation catamaran corporation cboe holdings cme group cna financial continental materials corporation equity residential fortune brands home & security general growth properties hospira hyatt hotels corp. integrys energy group jones lang lasalle kemper corporation nalco holding company nicor rli corp. rubicon technology stericycle titan international tribune media tronc tootsie roll industries ulta beauty usg corporation westell zebra technologies other major private companies alphabetically ace hardware baker & mckenzie blue cross blue shield association claire s country financial danfoss power solutions dot foods eby brown electro motive diesel flex n gate follett corporation gardner denver grant thornton llp health care service corporation heico cos. hendrickson international hub international jenner & block kirkland & ellis marmon group mayer brown medline industries molex nestl frozen pizza osi group pactiv reyes holdings ryerson inc. sidley austin skidmore owings & merrill solo cup company tellabs transunion true value us foods wirtz corporation related topics breweries in illinois companies in the chicago metropolitan area food manufacturers of chicago newspapers in illinois retailers on the magnificent mile wineries in illinois this illinois related article is a stub . you can help wikipedia by expanding it . v t e this article about a united states company or corporation involved in the energy industry is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title nicor & oldid 736138583 categories natural gas companies of the united statesshipping companies of the united statescompanies based in dupage county illinoiscompanies based in naperville illinoisillinois stubsunited states energy company stubshidden categories all stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages deutscht rk e edit links this page was last modified on 25 august 2016 at 12 41 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view