What you should know about this indicator
The foreign-born population covers everyone living in the United States who was not a US citizen at birth, whatever their current legal status. People born in the United States, in its territories such as Puerto Rico, or abroad to American parents count as native-born.
The data comes from two sources with the same definition of foreign-born:
- 1850–2000: the decennial census. Figures up to 1940 come from a full count of the population; figures from 1950 to 2000 are based on large census samples (between 1 in 4 and 1 in 6 people).
- 2005 onward: the American Community Survey, an annual survey of about 3.5 million households. Survey estimates are less exact than a census count.
Two things changed over the course of the series:
- The population included: Alaska and Hawaii are included from 1960 onward. The 1890 figures exclude about 325,000 people living in the Indian Territory and on Indian reservations, who were not asked about their place of birth.
- The list of US territories: people born in a territory count as native-born, so when a territory's status changed, so did their classification. For example, people born in the Philippines counted as native-born until it became independent in 1946, and as foreign-born after.
People living in the country without authorization are included in the definition, but censuses and surveys are known to miss part of this group. Other sources that try to adjust for this can find a slightly higher foreign-born population.
More Data on Migration
Sources and processing
This data is based on the following sources
How we process data at Our World in Data
All data and visualizations on Our World in Data rely on data sourced from one or several original data providers. Preparing this original data involves several processing steps. Depending on the data, this can include standardizing country names and world region definitions, converting units, calculating derived indicators such as per capita measures, as well as adding or adapting metadata such as the name or the description given to an indicator.
At the link below you can find a detailed description of the structure of our data pipeline, including links to all the code used to prepare data across Our World in Data.
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Citations
How to cite this page
To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:
“Data Page: Foreign-born population of the United States”, part of the following publication: Fiona Spooner, Tuna Acisu, Hannah Ritchie, Simon van Teutem, Sophia Mersmann, Marwa Boukarim, Esteban Ortiz-Ospina, Marcel Gerber, and Max Roser (2022) - “Migration”. Data adapted from US Census Bureau. Retrieved from https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states [online resource]How to cite this data
In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:
US Census Bureau (2006, 2025) – processed by Our World in DataFull citation
US Census Bureau (2006, 2025) – processed by Our World in Data. “Foreign-born population of the United States” [dataset]. US Census Bureau, “Historical Census Statistics on the Foreign-Born Population of the United States: 1850 to 2000”; US Census Bureau, “American Community Survey” [original data]. Retrieved July 23, 2026 from https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-statesDownload
Quick download
Download the data shown in this chart as a ZIP file containing a CSV file, metadata in JSON format, and a README. The CSV file can be opened in Excel, Google Sheets, and other data analysis tools.
Data API
Use these URLs to programmatically access this chart's data and configure your requests with the options below. Our documentation provides more information on how to use the API, and you can find a few code examples below.
Data URL (CSV format)
https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.csv?v=1&csvType=full&useColumnShortNames=falseMetadata URL (JSON format)
https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.metadata.json?v=1&csvType=full&useColumnShortNames=falseExcel / Google Sheets
=IMPORTDATA("https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.csv?v=1&csvType=full&useColumnShortNames=false")Python with Pandas
import pandas as pd
import requests
# Fetch the data.
df = pd.read_csv("https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.csv?v=1&csvType=full&useColumnShortNames=false", storage_options = {'User-Agent': 'Our World In Data data fetch/1.0'})
# Fetch the metadata
metadata = requests.get("https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.metadata.json?v=1&csvType=full&useColumnShortNames=false").json()R
library(jsonlite)
# Fetch the data
df <- read.csv("https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.csv?v=1&csvType=full&useColumnShortNames=false")
# Fetch the metadata
metadata <- fromJSON("https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.metadata.json?v=1&csvType=full&useColumnShortNames=false")Stata
import delimited "https://data-add-longrun-us.owid.pages.dev/grapher/foreign-born-population-of-the-united-states.csv?v=1&csvType=full&useColumnShortNames=false", encoding("utf-8") clear