ZzeerrO | Citizenship

One important point first:

there is only one official U.S. government agency that handles applications for U.S. citizenship through naturalization: U.S. Citizenship and Immigration Services (USCIS). The application is generally Form N-400, Application for Naturalization.

So rather than giving you 20 private sites that may charge unnecessary fees, here are 20 useful official U.S. government citizenship/USCIS websites and resources.

20 U.S. Citizenship Application & Information Websites

1. USCIS

Main immigration & citizenship website

https://www.uscis.gov/

2. USCIS Apply for Citizenship

Naturalization information and requirements

https://www.uscis.gov/citizenship/apply-for-citizenship

3. Form N-400

Official Application for Naturalization

https://www.uscis.gov/n-400

4. myUSCIS

Create an account and manage applications

https://my.uscis.gov/

5. File Online

File eligible USCIS applications online

https://www.uscis.gov/file-online

6. Citizenship Resource Center

Citizenship preparation and study materials

https://www.uscis.gov/citizenship

7. Naturalization Eligibility Tool

Check whether you may qualify

https://my.uscis.gov/apply/eligibility_tool

8. N-400 Early Filing Calculator

Determine how early you may file

https://www.uscis.gov/forms/uscis-early-filing-calculator

9. Civics Practice Test

Practice for the U.S. civics test

https://my.uscis.gov/prep/test/civics

10. USCIS Case Status Online

Check your application status

https://www.uscis.gov/tools/checking-your-case-status-online

11. USCIS Processing Times

Check estimated processing times

https://www.uscis.gov/tools/checking-your-case-status-online/processing-times

12. USCIS Field Offices

Find a USCIS office

https://www.uscis.gov/about-us/find-a-uscis-office

13. Find a Citizenship Class

Locate citizenship/English classes

https://my.uscis.gov/findaclass

14. Find Legal Services

Find authorized immigration legal help

https://www.uscis.gov/avoid-scams/find-legal-services

15. USCIS Fee Schedule

Check current application fees

https://www.uscis.gov/forms/filing-fees

16. USCIS Forms

Official USCIS forms and instructions

https://www.uscis.gov/forms

17. USCIS Multilingual Resource Center

Citizenship information in multiple languages

https://www.uscis.gov/tools/multilingual-resource-center

18. USCIS Online Account

https://myaccount.uscis.gov/

19. USCIS Contact Center

Contact USCIS for assistance

https://www.uscis.gov/contactcenter

20. U.S. Department of State — U.S. Citizenship

Information about citizenship through the State Department https://travel.state.gov/content/travel/en/legal/travel-legal-considerations/us-citizenship.html

If you're actually ready to apply for American citizenship, I'd start with these:

1. Check eligibility:

USCIS Naturalization Eligibility Tool

https://my.uscis.gov/apply/eligibility_tool

2. Learn the requirements:

USCIS — Apply for Citizenship

https://www.uscis.gov/citizenship/apply-for-citizenship

3. Complete Form N-400:

Official Form N-400

https://www.uscis.gov/n-400

4. File online:

USCIS Online Filing

https://www.uscis.gov/file-online

5. Study for the citizenship test:

USCIS Citizenship Resource Center

https://my.uscis.gov/prep/test/civics

6. Check your case:

USCIS Case Status

https://www.uscis.gov/tools/checking-your-case-status-online

USCIS currently lists the N-400 filing fee as $710 for online filing and $760 for paper filing under its current fee schedule, with reduced-fee and fee-waiver provisions for people who qualify.

Important:

If a private website says it can “apply for citizenship for you,” it is not the U.S. government simply because it uses words such as USCIS, citizenship, immigration, or American in its name. For the actual application, use the official .gov USCIS websites above.