City of Chicago


312 Area code: Chicago, Cook - Landline

Directory Numbers

How to dial a U.S. number internationally:

  • Start with your country's exit code (e.g., 011 for the U.S. or Canada).
  • Dial the U.S. country code (+1).
  • Dial the 10-digit phone number (area code + local number).

  • 3123002000 | +1 312-300-2000 Illinois U.S.A.
  • 3123002001 | +1 312-300-2001 Illinois U.S.A.
  • 3123002002 | +1 312-300-2002 Illinois U.S.A.
  • 3123002003 | +1 312-300-2003 Illinois U.S.A.
  • 3123002004 | +1 312-300-2004 Illinois U.S.A.
  • 3123002005 | +1 312-300-2005 Illinois U.S.A.
  • 3123002006 | +1 312-300-2006 Illinois U.S.A.
  • 3123002007 | +1 312-300-2007 Illinois U.S.A.
  • 3123002008 | +1 312-300-2008 Illinois U.S.A.
  • 3123002009 | +1 312-300-2009 Illinois U.S.A.
  • 3123002010 | +1 312-300-2010 Illinois U.S.A.
  • 3123002011 | +1 312-300-2011 Illinois U.S.A.
  • 3123002012 | +1 312-300-2012 Illinois U.S.A.
  • 3123002013 | +1 312-300-2013 Illinois U.S.A.
  • 3123002014 | +1 312-300-2014 Illinois U.S.A.
  • 3123002015 | +1 312-300-2015 Illinois U.S.A.
  • 3123002016 | +1 312-300-2016 Illinois U.S.A.
  • 3123002017 | +1 312-300-2017 Illinois U.S.A.
  • 3123002018 | +1 312-300-2018 Illinois U.S.A.
  • 3123002019 | +1 312-300-2019 Illinois U.S.A.
  • 3123002020 | +1 312-300-2020 Illinois U.S.A.
  • 3123002021 | +1 312-300-2021 Illinois U.S.A.
  • 3123002022 | +1 312-300-2022 Illinois U.S.A.
  • 3123002023 | +1 312-300-2023 Illinois U.S.A.
  • 3123002024 | +1 312-300-2024 Illinois U.S.A.
  • 3123002025 | +1 312-300-2025 Illinois U.S.A.
  • 3123002026 | +1 312-300-2026 Illinois U.S.A.
  • 3123002027 | +1 312-300-2027 Illinois U.S.A.
  • 3123002028 | +1 312-300-2028 Illinois U.S.A.
  • 3123002029 | +1 312-300-2029 Illinois U.S.A.
  • 3123002030 | +1 312-300-2030 Illinois U.S.A.
  • 3123002031 | +1 312-300-2031 Illinois U.S.A.
  • 3123002032 | +1 312-300-2032 Illinois U.S.A.
  • 3123002033 | +1 312-300-2033 Illinois U.S.A.
  • 3123002034 | +1 312-300-2034 Illinois U.S.A.
  • 3123002035 | +1 312-300-2035 Illinois U.S.A.
  • 3123002036 | +1 312-300-2036 Illinois U.S.A.
  • 3123002037 | +1 312-300-2037 Illinois U.S.A.
  • 3123002038 | +1 312-300-2038 Illinois U.S.A.
  • 3123002039 | +1 312-300-2039 Illinois U.S.A.
  • 3123002040 | +1 312-300-2040 Illinois U.S.A.
  • 3123002041 | +1 312-300-2041 Illinois U.S.A.
  • 3123002042 | +1 312-300-2042 Illinois U.S.A.
  • 3123002043 | +1 312-300-2043 Illinois U.S.A.
  • 3123002044 | +1 312-300-2044 Illinois U.S.A.
  • 3123002045 | +1 312-300-2045 Illinois U.S.A.
  • 3123002046 | +1 312-300-2046 Illinois U.S.A.
  • 3123002047 | +1 312-300-2047 Illinois U.S.A.
  • 3123002048 | +1 312-300-2048 Illinois U.S.A.
  • 3123002049 | +1 312-300-2049 Illinois U.S.A.
  • 3123002050 | +1 312-300-2050 Illinois U.S.A.
  • 3123002051 | +1 312-300-2051 Illinois U.S.A.
  • 3123002052 | +1 312-300-2052 Illinois U.S.A.
  • 3123002053 | +1 312-300-2053 Illinois U.S.A.
  • 3123002054 | +1 312-300-2054 Illinois U.S.A.
  • 3123002055 | +1 312-300-2055 Illinois U.S.A.
  • 3123002056 | +1 312-300-2056 Illinois U.S.A.
  • 3123002057 | +1 312-300-2057 Illinois U.S.A.
  • 3123002058 | +1 312-300-2058 Illinois U.S.A.
  • 3123002059 | +1 312-300-2059 Illinois U.S.A.
  • 3123002060 | +1 312-300-2060 Illinois U.S.A.
  • 3123002061 | +1 312-300-2061 Illinois U.S.A.
  • 3123002062 | +1 312-300-2062 Illinois U.S.A.
  • 3123002063 | +1 312-300-2063 Illinois U.S.A.
  • 3123002064 | +1 312-300-2064 Illinois U.S.A.
  • 3123002065 | +1 312-300-2065 Illinois U.S.A.
  • 3123002066 | +1 312-300-2066 Illinois U.S.A.
  • 3123002067 | +1 312-300-2067 Illinois U.S.A.
  • 3123002068 | +1 312-300-2068 Illinois U.S.A.
  • 3123002069 | +1 312-300-2069 Illinois U.S.A.
  • 3123002070 | +1 312-300-2070 Illinois U.S.A.
  • 3123002071 | +1 312-300-2071 Illinois U.S.A.
  • 3123002072 | +1 312-300-2072 Illinois U.S.A.
  • 3123002073 | +1 312-300-2073 Illinois U.S.A.
  • 3123002074 | +1 312-300-2074 Illinois U.S.A.
  • 3123002075 | +1 312-300-2075 Illinois U.S.A.
  • 3123002076 | +1 312-300-2076 Illinois U.S.A.
  • 3123002077 | +1 312-300-2077 Illinois U.S.A.
  • 3123002078 | +1 312-300-2078 Illinois U.S.A.
  • 3123002079 | +1 312-300-2079 Illinois U.S.A.
  • 3123002080 | +1 312-300-2080 Illinois U.S.A.
  • 3123002081 | +1 312-300-2081 Illinois U.S.A.
  • 3123002082 | +1 312-300-2082 Illinois U.S.A.
  • 3123002083 | +1 312-300-2083 Illinois U.S.A.
  • 3123002084 | +1 312-300-2084 Illinois U.S.A.
  • 3123002085 | +1 312-300-2085 Illinois U.S.A.
  • 3123002086 | +1 312-300-2086 Illinois U.S.A.
  • 3123002087 | +1 312-300-2087 Illinois U.S.A.
  • 3123002088 | +1 312-300-2088 Illinois U.S.A.
  • 3123002089 | +1 312-300-2089 Illinois U.S.A.
  • 3123002090 | +1 312-300-2090 Illinois U.S.A.
  • 3123002091 | +1 312-300-2091 Illinois U.S.A.
  • 3123002092 | +1 312-300-2092 Illinois U.S.A.
  • 3123002093 | +1 312-300-2093 Illinois U.S.A.
  • 3123002094 | +1 312-300-2094 Illinois U.S.A.
  • 3123002095 | +1 312-300-2095 Illinois U.S.A.
  • 3123002096 | +1 312-300-2096 Illinois U.S.A.
  • 3123002097 | +1 312-300-2097 Illinois U.S.A.
  • 3123002098 | +1 312-300-2098 Illinois U.S.A.
  • 3123002099 | +1 312-300-2099 Illinois U.S.A.