Table Data - Population Estimate, Total (5-year estimate) in Placer County, CA

Title Population Estimate, Total (5-year estimate) in Placer County, CA
Series ID B03002001E006061
Source U.S. Census Bureau
Release County Population Estimates By Race And Ethnicity (Not a Press Release)
Seasonal Adjustment Not Seasonally Adjusted
Frequency Annual
Units Persons
Date Range 2009-01-01 to 2024-01-01
Last Updated 2026-01-29 3:35 PM CST
Notes Data obtained from ACS Demographic and Housing Estimates, table DP05.

Multiyear estimates from the American Community Survey (ACS) are "period" estimates derived from a data sample collected over a period of time, as opposed to "point-in-time" estimates such as those from past decennial censuses. ACS 5-year estimate includes data collected over a 60-month period. The date of the data is the end of the 5-year period. For example, a value dated 2014 represents data from 2010 to 2014. However, they do not describe any specific day, month, or year within that time period.

Multiyear estimates require some considerations that single-year estimates do not. For example, multiyear estimates released in consecutive years consist mostly of overlapping years and shared data. The 2010-2014 ACS 5-year estimates share sample data from 2011 through 2014 with the 2011-2015 ACS 5-year estimates. Because of this overlap, users should use extreme caution in making comparisons with consecutive years of multiyear estimates.

Please see "Section 3: Understanding and Using ACS Single-Year and Multiyear Estimates" on publication page 13 (file page 19) of the 2018 ACS General Handbook for a more thorough clarification.
DATE VALUE
2009-01-01 332059
2010-01-01 336477
2011-01-01 343554
2012-01-01 350074
2013-01-01 355924
2014-01-01 361518
2015-01-01 366280
2016-01-01 370571
2017-01-01 374985
2018-01-01 380077
2019-01-01 385512
2020-01-01 391799
2021-01-01 400330
2022-01-01 406608
2023-01-01 412435
2024-01-01 419156

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