United States Census Bureau | An official website of the United States Government
2023
Code Lists
Detailed codes for
variables that contain a
large number of coded
responses, such as
ancestry and occupation.
[https://www2.census.
gov/programs-
surveys/acs/tech_doc
s/code_lists/2023_AC
S_Code_Lists.xlsx]
2023
Code
List
[1.0
MB]
Instructions for
Applying
Statistical
Testing
Basic instructions for
obtaining the ACS
standard errors needed to
do manual statistical
testing.
[https://www2.ce
nsus.gov/progra
ms-
surveys/acs/tech
_docs/statistical
_testing/2023_In
structions_for_St
at_Testing_ACS.p
df]
2023
Instruction
s for
Applying
Statistical
Testing to
ACS 1-
year and
5-year
Data
Subject
Definitions
Definitions of population
and housing variables to
help you understand the
results of the American
Community Survey
[https://www2.census
.gov/programs-
surveys/acs/tech_doc
s/subject_definitions/
2023_ACSSubjectDefi
nitions.pdf]
2023
Subje
ct
Defini
tions
[1.4
MB]
Worked
Examples for
Approximating
Margins of Error
Worked Examples on
approximating standard
errors for various types of
ACS estimates.
[https://www2.cen
sus.gov/programs-
surveys/acs/tech_
docs/accuracy/202
3_ACS_Accuracy_D
ocument_Worked_
Examples.pdf]
2023
Worked
Example
s for
Approxi
mating
Margins
of Error
Group Quarters
Definitions
Statistical
Testing Tool
Definitions for classifying
group living situations
according to the type of
housing and/or services
provided
[https://www2.cens
us.gov/programs-
surveys/acs/tech_d
ocs/group_definitio
ns/2023GQ_Definiti
ons.pdf]
2023
Group
Quarter
s
Definiti
ons
Spreadsheet to quickly test
whether ACS estimates
are statistically different
from one another.
[https://www.census.g
ov/programs-
surveys/acs/guidance
/statistical-testing-
tool.html]
Statis
tical
Testi
ng
Tool
[<1.0
MB]
Accuracy of the
Data
Comparison
Guidance
A basic explanation of the
Learn more about
sample design, estimation
comparing the 2023 ACS
methodology, and
with 2020 Census, 2010
accuracy of the data.
Census, and 5-year to 5-
[https://www2.cen
sus.gov/programs-
surveys/acs/tech_
docs/accuracy/AC
S_Accuracy_of_Da
ta_2023.pdf]
year estimates.
[https://www.census.
gov/programs-
surveys/acs/guidanc
e/comparing-acs-
data/2023.html]
2023
Comp
arison
Guida
nce
[https://www2.ce
nsus.gov/progra
ms-
surveys/acs/tech
_docs/accuracy/
PRCS_Accuracy_
of_Data_2023.pdf
]
Jam Values
Character or numeric
values used to explain the
absence of data.
2023
ACS 1-
year
Accuracy
of the
Data (US)
[<1.0 MB]
2023
PRCS 1-
year
Accuracy
of the
Data
(Puerto
Rico)
[<1.0 MB]
[https://www2.census.
gov/programs-
surveys/acs/tech_docs
/jam_values/2023_Jam
_Values.xlsx]
Jam
Valu
es
[1.0
MB]
[https://www2.cen
sus.gov/programs
-
surveys/acs/tech_
docs/accuracy/M
ultiyearACSAccura
cyofData2023.pdf]
2019-
2023 ACS
5-year
Accuracy
of the
Data (US)
[<1.0 MB]
[https://www2.ce
nsus.gov/progra
ms-
surveys/acs/tech
_docs/accuracy/
MultiyearPRCSAc
curacyofData202
3.pdf]
2019-
2023
PRCS 5-
year
Accuracy
of the Data
(Puerto
Rico) [<1.0
MB]
Table Shells and
Table List
Learn more about the
layout of the tables and
information about tables.
Table
Shells
and
Table
List
[https://www.census.
gov/programs-
surveys/acs/technical
-
documentation/table-
shells.html]
Page Last Revised - April 29, 2025