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To become a U.S. citizen, you must first have lawful permanent residence in the United States (a "Green Card"). You must also meet the other requirements listed below.

Citizenship through Naturalization Application

All individuals applying for citizenship through naturalization must be at least 18 years old and:

  • Have continuously resided in the U.S. for five (5) years after becoming a lawful permanent resident (three (3) years if married to a U.S. citizen);
  • Have spent at least half of the past five (5) years (three (3) years if married to a U.S. citizen) as a lawful permanent resident physically in the United States;
  • Must have lived for at least three (3) months in the jurisdiction where the application is filed;
  • Must demonstrate good moral character for the entire period of required residence (5 or 3 years), and an attachment to the principles embodied in the U.S. Constitution; and
  • Must possess basic English skills and knowledge of the history and government of the United States (certain exceptions apply); and
  • Must be willing to take the Oath of Citizenship.

Certain people are not eligible for citizenship even if they have met the above requirements. These include people who have held certain ideological beliefs and people who have deserted the U.S. military. Some criminal offenses may also interfere with a person’s eligibility to obtain citizenship through naturalization.

Citizenship through Military Service

There are special rules for the naturalization of members of the Armed Forces. If you are a lawful permanent resident who has served in the U.S. Armed Forces and you wish to apply for naturalization, please contact Kolko & Casey, P.C. to inquire about the special rules that apply to you.

Resources for Naturalization Examinations

Below are some resources for clients to prepare for the Naturalization Examination Civics and English Tests:

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Office Location and Directions

Kolko & Casey, P.C.
5251 South Quebec Street
Suite 200
Greenwood Village, Colorado 80111

Call us today:
303-371-1822

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Kolko & Casey, P.C. is a full service immigration and naturalization law firm providing professional legal services to individuals and businesses throughout Colorado, the Rocky Mountain West, the United States, and the World. Our professional staff speaks English, Spanish, Korean, and Portuguese and we can arrange for translators in any other language.