Individual Census Records from 1790 to 1950 are maintained by the National Archives and Records Administration, not the U.S. Census Bureau.

The 1830 Census started June 1, 1830 from What day was the census taken each decade? at the United States Census Bureau. See the 1830 Overview at United States Census Bureau.

Census Instructions

The decennial census has always required a large workforce to visit and collect data from households. Between 1790 to 1870, the duty of collecting census data fell upon the U.S. Marshals. A March 3, 1879 act replaced the U.S. Marshals with specially hired and trained census-takers to conduct the 1880 and subsequent censuses.

During the early censuses, U.S. Marshalls received little training or instruction on how to collect census data. In fact, it was not until 1830 that marshals even received printed shedules on which to record households' responses. The marshals often received limited instruction from the census acts passed prior to each census. 

Beginning with the 1880 census, specially hired and trained census-takers replaced the U.S. marshals. Door-to-door census by temporary census-takers was the primary method of conducting the census until the U.S. Census Bureau began mailing questionnaires to households in 1960.

As more and more households received and returned their questionnaires by mail, the role of census-taker changed. Today, the majority of households are counted by mailed questionnaires. Census-takers visit places frequented by transient households (shelters and soup kitchens, campsites, etc.) and households that do not return their mailed questionnaires (during the "Nonresponse Follow-Up" phase of the census). As a result, the "Instructions to Enumerators" provided here include the congressional acts U.S. marshalls reviewed during the early census, specially-published instructions for door-to-door census, and lastly, guides used for the limited number of personal interviews conducted during nonresponse follow-up operations.

Copied from the Census Intructions at the United States Census Bureauthat show 1790 Instructions, but not again until 1850 Instructions through 2010.

Page 349 - Reel 0026 - Allen County, Indiana - Population schedules of the fifth census of the United States, 1830, Indiana [microform] (1969) at Internet Archive

Links to Online Census Records

1. ACGSI.org Annotated Census Records, 1830 & 1840, Allen County, Indiana - Heads of Household and Names from Annotations
2. USGenWeb Alphabetical Index - 2011
3. Ancestry.comblank 1830 census form
4. FamilySearch.orgWiki 1830 Census Information
5. FamilySearch.orgBrowse 1830 Indiana Census by Township
6. FamilySearch.orgSearch 1830 U.S. Census Index
7. FamilySearch.orgWiki for Indiana Census 1807 - 1940 links organized by year to various online census records.
8. FamilySearch.orgWiki for Indiana Census 1807 - 1940 links organized by year to various online census records.
9. FindMyPast.com Free Search for US Census 1830
10. Use Steve Morse Census Search Tool for any census
11. Internet Archive Allen County begins on page 349 (n685)
12. Internet Archive Population schedules of the fifth census of the United States, 1830, Indiana [microform] (Volume Reel 0026 - 1830 Indiana Federal Population Census Schedules - Allen County
13. USGenWeb page 349 transcription - 2011