Federal Reserve Economic Data


The American Community Survey (ACS) and the Puerto Rico Community Survey (PRCS) asked members of households whether they lived in the same residence 1 year ago. For people who lived in a different residence, the location of their previous residence is collected.

ACS uses a series of monthly samples to produce estimates. Estimates for geographies of population 65,000 or greater are published annually using these monthly samples. Three years of monthly samples are needed to publish estimates for geographies of 20,000 or greater and five years for smaller geographies. The 5-year dataset is used for the county-to-county migration flows since many counties have a population less than 20,000. The first 5-year ACS dataset covers the years 2005 through 2009.

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. https://www.census.gov/content/dam/Census/library/publications/2018/acs/acs_general_handbook_2018.pdf


   

Please select a date range

    2009    
 
 
    2020
Persons
Name 2020 Preceding
Period
Year Ago
from Period
Adams County, CO
1,116 -781 -781
Alamosa County, CO
577 345 345
Arapahoe County, CO
993 333 333
Archuleta County, CO
315 521 521
Baca County, CO
43 45 45
Bent County, CO
2 -212 -212
Boulder County, CO
7,328 6,127 6,127
Broomfield County, CO
5 2,610 2,610
Chaffee County, CO
100 -187 -187
Cheyenne County, CO
-7 43 43
Clear Creek County, CO
235 550 550
Conejos County, CO
176 85 85
Costilla County, CO
-91 -119 -119
Crowley County, CO
-319 1 1
Custer County, CO
-315 -267 -267
Delta County, CO
-320 -365 -365
Denver County, CO
-4,052 -2,790 -2,790
Dolores County, CO
-74 -6 -6
Douglas County, CO
3,457 1,100 1,100
Eagle County, CO
625 229 229
Elbert County, CO
178 385 385
El Paso County, CO
6,124 10,938 10,938
Fremont County, CO
-862 -613 -613
Garfield County, CO
-553 382 382
Gilpin County, CO
170 216 216
Grand County, CO
-542 -183 -183
Gunnison County, CO
580 817 817
Hinsdale County, CO
51 61 61
Huerfano County, CO
37 83 83
Jackson County, CO
-99 -262 -262
Jefferson County, CO
1,091 835 835
Kiowa County, CO
-109 30 30
Kit Carson County, CO
134 -34 -34
Lake County, CO
123 261 261
La Plata County, CO
945 448 448
Larimer County, CO
5,074 6,284 6,284
Las Animas County, CO
343 414 414
Lincoln County, CO
-133 -265 -265
Logan County, CO
-74 684 684
Mesa County, CO
2,307 3,337 3,337
Mineral County, CO
109 42 42
Moffat County, CO
-52 69 69
Montezuma County, CO
-500 -92 -92
Montrose County, CO
-500 14 14
Morgan County, CO
936 911 911
Otero County, CO
59 44 44
Ouray County, CO
-341 -389 -389
Park County, CO
-48 386 386
Phillips County, CO
-144 -21 -21
Pitkin County, CO
-456 -643 -643
Prowers County, CO
289 129 129
Pueblo County, CO
-871 508 508
Rio Blanco County, CO
67 -26 -26
Rio Grande County, CO
-355 -203 -203
Routt County, CO
-52 109 109
Saguache County, CO
180 -257 -257
San Juan County, CO
-32 -25 -25
San Miguel County, CO
-354 -493 -493
Sedgwick County, CO
-76 -114 -114
Summit County, CO
-378 -1,731 -1,731
Teller County, CO
-481 554 554
Washington County, CO
488 476 476
Weld County, CO
10,261 7,850 7,850
Yuma County, CO
-253 -177 -177
   

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