Migration in Três Arroios/RS (2017–2022)

Três Arroios/RS had a reference population (aged 5 or over in 2022) of 2,510 people. In the 2017–2022 five-year period, the municipality received 185 in-migrants and lost 100 out-migrants to other municipalities in Brazil, resulting in a net migration of +85 people (33.40 per 1,000 population) and a migration effectiveness index (IEM) of 0.294. This classifies the municipality, for the period, as one of migratory attraction. In addition, 0 arrived with an unreported origin and 5 came from abroad.

Indicators

Migration indicators for Três Arroios/RS, 2017–2022
Indicator	Estimate	95% CI	Precision
In-migrants	185	121 to 249	use with caution
Out-migrants	100	33 to 167	low precision
Net migration	+85	−8 to 178	not classified
Net migration rate, TLM (per 1,000 pop.)	33.40	-	-
Migration effectiveness index (IEM)	0.294	-	-

Sample of in-migrants: 50-99 observations. Sample of out-migrants: 5-19 observations. 95% confidence interval computed as estimate ± 1.96 × standard error.

Top origins and destinations

Top 10 origins of in-migrants to Três Arroios/RS
Origin	People	Precision
Erechim/RS · view pair in the atlas	85	use with caution
Concórdia/SC · view pair in the atlas	20	low precision
Severiano de Almeida/RS · view pair in the atlas	15	low precision

Top 10 destinations of out-migrants from Três Arroios/RS
Destination	People	Precision
No outflows published individually (below the disclosure threshold).

Profile of migrants and residents

In-migrants (arrivals)

Migrant type
Category	Estimate	Share	Sample
Multi-step migration	90	50.0%	20-49
First move from municipality of birth	60	33.3%	20-49
Return to municipality of birth	30	16.7%	5-19

Educational attainment (people aged 25 and over)
Category	Estimate	Share	Sample
Completed high school, incomplete higher education	55	37.9%	5-19
No schooling or incomplete elementary	55	37.9%	20-49
Completed higher education	20	13.8%	5-19
Completed elementary, incomplete high school	15	10.3%	5-19

Household income per capita (in 2022 minimum wages)
Category	Estimate	Share	Sample
1 to 2 minimum wages	80	43.2%	20-49
More than 2 minimum wages	50	27.0%	5-19
½ to 1 minimum wage	45	24.3%	5-19
Other / suppressed	10	5.4%	5-19

Age and sex
Category	Estimate	Share	Sample
Ages 25–39, female	40	22.2%	5-19
Ages 40–59, female	25	13.9%	5-19
Other / suppressed	25	13.9%	5-19
Ages 60 and over, female	25	13.9%	5-19
Ages 60 and over, male	20	11.1%	5-19
Ages 25–39, male	20	11.1%	5-19
Ages 40–59, male	15	8.3%	5-19
Ages 5–14, male	10	5.6%	5-19

Out-migrants (departures)

Migrant type
Category	Estimate	Share	Sample
Multi-step migration	45	45.0%	5-19
First move from municipality of birth	35	35.0%	5-19
Other / suppressed	20	20.0%	<5

Educational attainment (people aged 25 and over)
Category	Estimate	Share	Sample
Completed higher education	40	53.3%	5-19
Other / suppressed	20	26.7%	<5
Completed high school, incomplete higher education	15	20.0%	5-19

Household income per capita (in 2022 minimum wages)
Category	Estimate	Share	Sample
More than 2 minimum wages	45	45.0%	5-19
Other / suppressed	30	30.0%	5-19
1 to 2 minimum wages	25	25.0%	5-19

Age and sex
Category	Estimate	Share	Sample
Ages 25–39, male	40	40.0%	5-19
Other / suppressed	35	35.0%	5-19
Ages 25–39, female	25	25.0%	5-19

Non-migrant residents

Educational attainment (people aged 25 and over)
Category	Estimate	Share	Sample
No schooling or incomplete elementary	1,205	61.3%	100-499
Completed high school, incomplete higher education	400	20.4%	100-499
Completed elementary, incomplete high school	235	12.0%	50-99
Completed higher education	125	6.4%	20-49

Household income per capita (in 2022 minimum wages)
Category	Estimate	Share	Sample
1 to 2 minimum wages	965	40.2%	100-499
More than 2 minimum wages	785	32.7%	100-499
½ to 1 minimum wage	560	23.3%	100-499
¼ to ½ minimum wage	60	2.5%	20-49
Up to ¼ of a minimum wage	30	1.2%	5-19

Age and sex
Category	Estimate	Share	Sample
Ages 60 and over, female	430	18.5%	100-499
Ages 40–59, male	405	17.5%	100-499
Ages 60 and over, male	390	16.8%	100-499
Ages 40–59, female	385	16.6%	100-499
Ages 25–39, male	195	8.4%	50-99
Ages 25–39, female	160	6.9%	20-49
Ages 15–24, male	120	5.2%	20-49
Ages 5–14, female	90	3.9%	20-49
Ages 15–24, female	80	3.4%	20-49
Ages 5–14, male	65	2.8%	20-49

Commuting (work and study)

Commuting indicators for Três Arroios/RS
Employed persons (aged 10 and over)	1,430
Commute out to work in another municipality	115
Commute in from another municipality to work here	125
Net commuting	+10
Out-commuting rate (%)	8.12
Commuting attraction index	0.948
Median commuting time	30 min

Open Três Arroios/RS in the interactive atlas →

Methodological note

Estimates from the sample microdata of the 2022 Demographic Census (IBGE, controlled access), fixed-date migration question (residence on July 31, 2017 compared with residence on July 31, 2022). Every estimate is rounded to multiples of 5 and has passed statistical disclosure control (no cell with fewer than 5 people or 3 sampled households). See the full methodology and the glossary.

How to cite this page

Daniel Pessini Sobreira. Atlas da migração interna no Brasil [Atlas of internal migration in Brazil]: Três Arroios/RS. Data from the 2022 Demographic Census (IBGE). Data version: 2026-10-01. Available at: https://atlas-da-migracao.github.io/en/municipio/tres-arroios-rs-4321634/. Dataset DOI: https://doi.org/10.5281/zenodo.22469791.