Migration in Porto/PI (2017–2022)

Porto/PI had a reference population (aged 5 or over in 2022) of 10,955 people. In the 2017–2022 five-year period, the municipality received 420 in-migrants and lost 710 out-migrants to other municipalities in Brazil, resulting in a net migration of −290 people (−26.37 per 1,000 population) and a migration effectiveness index (IEM) of −0.256. This classifies the municipality, for the period, as one of migratory depletion. In addition, 5 arrived with an unreported origin and 0 came from abroad.

Indicators

Migration indicators for Porto/PI, 2017–2022
Indicator	Estimate	95% CI	Precision
In-migrants	420	284 to 556	use with caution
Out-migrants	710	471 to 949	use with caution
Net migration	−290	−565 to −15	not classified
Net migration rate, TLM (per 1,000 pop.)	−26.37	-	-
Migration effectiveness index (IEM)	−0.256	-	-

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

Top origins and destinations

Top 10 origins of in-migrants to Porto/PI
Origin	People	Precision
Teresina/PI · view pair in the atlas	100	low precision
Nossa Senhora dos Remédios/PI · view pair in the atlas	70	low precision
Buriti/MA · view pair in the atlas	45	low precision

Top 10 destinations of out-migrants from Porto/PI
Destination	People	Precision
Teresina/PI · view pair in the atlas	190	low precision
Buriti/MA · view pair in the atlas	60	low precision
Campo Largo do Piauí/PI · view pair in the atlas	60	low precision
Nossa Senhora dos Remédios/PI · view pair in the atlas	45	low precision

Profile of migrants and residents

In-migrants (arrivals)

Migrant type
Category	Estimate	Share	Sample
First move from municipality of birth	200	47.6%	20-49
Return to municipality of birth	115	27.4%	20-49
Multi-step migration	105	25.0%	20-49

Educational attainment (people aged 25 and over)
Category	Estimate	Share	Sample
No schooling or incomplete elementary	110	44.0%	20-49
Completed high school, incomplete higher education	80	32.0%	5-19
Completed elementary, incomplete high school	35	14.0%	5-19
Other / suppressed	25	10.0%	<5

Household income per capita (in 2022 minimum wages)
Category	Estimate	Share	Sample
Up to ¼ of a minimum wage	170	40.5%	20-49
¼ to ½ minimum wage	130	31.0%	20-49
½ to 1 minimum wage	90	21.4%	5-19
1 to 2 minimum wages	30	7.1%	5-19

Age and sex
Category	Estimate	Share	Sample
Ages 25–39, male	65	15.7%	5-19
Ages 5–14, female	55	13.3%	5-19
Ages 15–24, female	55	13.3%	5-19
Ages 25–39, female	50	12.0%	5-19
Ages 40–59, male	40	9.6%	5-19
Ages 40–59, female	35	8.4%	5-19
Ages 15–24, male	35	8.4%	5-19
Ages 5–14, male	30	7.2%	5-19
Ages 60 and over, male	30	7.2%	5-19
Ages 60 and over, female	20	4.8%	5-19

Out-migrants (departures)

Migrant type
Category	Estimate	Share	Sample
First move from municipality of birth	445	62.7%	50-99
Multi-step migration	185	26.1%	5-19
Return to municipality of birth	80	11.3%	5-19

Educational attainment (people aged 25 and over)
Category	Estimate	Share	Sample
No schooling or incomplete elementary	150	52.6%	5-19
Completed high school, incomplete higher education	80	28.1%	5-19
Other / suppressed	55	19.3%	5-19

Household income per capita (in 2022 minimum wages)
Category	Estimate	Share	Sample
¼ to ½ minimum wage	235	33.1%	20-49
½ to 1 minimum wage	195	27.5%	20-49
Up to ¼ of a minimum wage	120	16.9%	20-49
1 to 2 minimum wages	90	12.7%	5-19
Other / suppressed	70	9.9%	<5

Age and sex
Category	Estimate	Share	Sample
Ages 15–24, female	160	22.7%	5-19
Ages 5–14, female	135	19.1%	5-19
Other / suppressed	130	18.4%	5-19
Ages 25–39, female	95	13.5%	5-19
Ages 15–24, male	85	12.1%	5-19
Ages 25–39, male	50	7.1%	5-19
Ages 40–59, female	50	7.1%	5-19

Non-migrant residents

Educational attainment (people aged 25 and over)
Category	Estimate	Share	Sample
No schooling or incomplete elementary	3,895	62.1%	>=500
Completed high school, incomplete higher education	1,155	18.4%	100-499
Completed elementary, incomplete high school	695	11.1%	100-499
Completed higher education	525	8.4%	100-499

Household income per capita (in 2022 minimum wages)
Category	Estimate	Share	Sample
Up to ¼ of a minimum wage	4,540	39.0%	>=500
¼ to ½ minimum wage	3,485	30.0%	>=500
½ to 1 minimum wage	2,815	24.2%	>=500
1 to 2 minimum wages	575	4.9%	100-499
More than 2 minimum wages	215	1.8%	20-49

Age and sex
Category	Estimate	Share	Sample
Ages 25–39, female	1,320	12.5%	100-499
Ages 25–39, male	1,315	12.5%	100-499
Ages 40–59, female	1,155	11.0%	100-499
Ages 5–14, male	1,120	10.6%	100-499
Ages 40–59, male	1,095	10.4%	100-499
Ages 15–24, male	1,090	10.4%	100-499
Ages 5–14, female	1,015	9.6%	100-499
Ages 15–24, female	980	9.3%	100-499
Ages 60 and over, female	715	6.8%	100-499
Ages 60 and over, male	625	5.9%	100-499
Other / suppressed	100	0.9%	20-49

Commuting (work and study)

Commuting indicators for Porto/PI
Employed persons (aged 10 and over)	2,865
Commute out to work in another municipality	350
Commute in from another municipality to work here	120
Net commuting	−235
Out-commuting rate (%)	12.27
Commuting attraction index	0.902
Median commuting time	30 min

Open Porto/PI 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]: Porto/PI. Data from the 2022 Demographic Census (IBGE). Data version: 2026-10-01. Available at: https://atlas-da-migracao.github.io/en/municipio/porto-pi-2208502/. Dataset DOI: https://doi.org/10.5281/zenodo.22469791.