United States Census of 1870 - IPUMS Subset

United States, 1870

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Reference ID

USA_1870_PHC_v01_M_v7.5_A_IPUMS

Producer(s)

Department of the Interior, IPUMS

Metadata

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Created on

Dec 23, 2014

Last modified

Sep 03, 2025

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Age in months (US1870A_AGEMONTH)

Data file: USA1870_PHC-P-H

Overview

Type: Discrete

Start: 281

End: 282

Width: 2

Range: -

Format: Numeric

Questions and instructions

Literal question

<svar a="all" v="US70A424 US70A426 US70A427 US70A428">4. ____ Age at last birthday. If younger than 1 year, give months in fractions, thus, 3/12.<br /></svar>

Categories

Value	Category
00	0 months old
01	1 month old
02	2
03	3
04	4
05	5
06	6
07	7
08	8
09	9
10	10
11	11
98	Unknown/illegible
99	NIU (not in universe) or blank

Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.

Description

Definition

Age in months.

Universe

United States 1870: Persons below 1 year old

concept

Concept

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