Iowa Naturalization Records, 1859-1990
This collection includes records such as Petitions for Naturalization, Declarations of Intention, Oaths of Allegiance, and Military Petitions filed in the United States District and Superior Courts of Iowa from 1859 to 1990. Original records are housed at the National Archives and Records Administration branch in Kansas City. This collection is associated with NARA Record Group 21.
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Iowa Naturalization Records
Source: https://www.familysearch.org/en/wiki/Iowa_Naturalization_Records_-_FamilySearch_Historical_Records
What is in This Collection?
This collection contains naturalization petitions for the United States District Courts for the state of Iowa, 1859-1990. Images were originally captured at the NARA Regional Archives facility in Kansas City, Missouri. Additional records and/or images may be added to this collection in the future.
Related National Archives Collections
Declarations of Intentions
Petitions for Naturalization
- U.S. District Court for the Ottumwa Division of the Southern District of Iowa. NAID 649355
- U.S. District Court for the Eastern (Dubuque) Division of the Northern District of Iowa. NAID 648909
- U.S. District Court for the Southern (Creston) Division of the Southern District of Iowa. NAID 648771
- U.S. District Court for the central (Des Moines) Division of the Southern District of Iowa. NAID 648896
- U.S. District Court for the Cedar Rapids Division of the Northern District of Iowa. NAID 571024
- U.S. District Court for the Central (Fort Dodge) Division of the Northern District of Iowa. NAID 649315
- Iowa. District Court (Linn County) NAID 648611
- U.S. District Court for the Central Division of the Northern District of Iowa. Mason City Term. NAID 649333
- U.S. District Court for the Eastern Division of the Northern District of Iowa. Waterloo Term. NAID 649936
- U.S. District Court for the Western (Sioux City) Division of the Northern District of Iowa. NAID 649771
Military Petitions for Naturalization
Name Indexes NARA - Kansas City
- Name Index to Naturalizations for Southern District of Iowa (1930-1951) Southern (Creston) Division
- Name Index to Naturalizations for District of Iowa (1840-1888) Southern (Keokuk) Division
- Name Index to Naturalizations for Northern District of Iowa (1942-1961) Central (Mason City) Division
- Name Index to Naturalizations for Southern District of Iowa (1916-1951) Ottumwa Division
What Can These Records Tell Me?
The following information may be found in these records:
- Full name of citizen
- Residence at the time of naturalization
- Birthplace
- Date of birth
- Married
- Residence
- Place of marriage
- Entry date into country
- Entry point into country
- Children's names and birthdates
- Last foreign residence
- Vessel name
- Arrival date
- Admission date
- Certificate date
- Name of court
- Petition number
- Registration number
- Signature
Collection Content
Sample Images
1939 Declaration of Intention
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Inventory
For a list of all the titles included in this Historical Records publication see Iowa Naturalization Records - Inventory.
Collection Details
Location of Original Records
National Archives and Records Administration
"Iowa Naturalization Records, 1859-1990." Database. FamilySearch. https://FamilySearch.org : 27 January 2026.From "Naturalization Records of Iowa." National Archives and Records Administration. archives.gov. : n.d. Citing multiple NARA NAID. Kansas City, Missouri.: National Archives and Records Administration, n.d.
