Piauí in numbers

3,271,199residents · 2022 Census

Rank: 18th among the 27 states
Share of Brazil: 1.6% of Brazil's 203,080,756 people
Municipalities: 224
Capital: Teresina
Region: Northeast
Source: IBGE, 2022 Demographic Census (SIDRA table 4714)

Piauí has 3,271,199 inhabitants (2022 Census), the 18th most populous state in the country, behind São Paulo, Minas Gerais, Rio de Janeiro and 14 others, and holds 1.6% of Brazilians. The capital, Teresina, has 866,300 people, 26.5% of the state. The state has 224 municipalities.

Piauí on the map of Brazil

Dark outline: Piauí. Color: state population, in millions.

Population rank among the states in the same region (Northeast):

State	People
Bahia	14,141,626
Pernambuco	9,058,931
Ceará	8,794,957
Maranhão	6,776,699
Paraíba	3,974,687
Rio Grande do Norte	3,302,729
Piauí	3,271,199
Alagoas	3,127,683
Sergipe	2,210,004

See all states →

The 10 most populous municipalities in Piauí

#	Municipality	People	% of state
1	Teresina	866,300	26.5%
2	Parnaíba	162,159	5.0%
3	Picos	83,090	2.5%
4	Piripiri	65,538	2.0%
5	Floriano	62,036	1.9%
6	Barras	47,938	1.5%
7	Altos	47,453	1.5%
8	União	46,119	1.4%
9	Campo Maior	45,793	1.4%
10	José de Freitas	42,559	1.3%

Municipalities by size

Size	Municipalities	Population	% of state
up to 5,000	84	319,634	9.8%
5,000 to 20,000	114	1,009,065	30.8%
20,000 to 100,000	24	914,041	27.9%
over 100,000	2	1,028,459	31.4%

2 municipalities have over 100,000 inhabitants and hold 31.4% of the state's population.

See all 224 municipalities in Piauí (2022 Census population)

#	Municipality	People	% of state
1	Teresina	866,300	26.5%
2	Parnaíba	162,159	5.0%
3	Picos	83,090	2.5%
4	Piripiri	65,538	2.0%
5	Floriano	62,036	1.9%
6	Barras	47,938	1.5%
7	Altos	47,453	1.5%
8	União	46,119	1.4%
9	Campo Maior	45,793	1.4%
10	José de Freitas	42,559	1.3%
11	Esperantina	40,970	1.3%
12	São Raimundo Nonato	38,934	1.2%
13	Oeiras	38,161	1.2%
14	Pedro II	37,894	1.2%
15	Miguel Alves	32,150	1.0%
16	Luís Correia	30,641	0.9%
17	Piracuruca	28,846	0.9%
18	Bom Jesus	28,796	0.9%
19	Cocal	28,212	0.9%
20	Corrente	27,278	0.8%
21	Batalha	26,300	0.8%
22	Luzilândia	25,375	0.8%
23	Uruçuí	25,203	0.8%
24	Valença do Piauí	22,279	0.7%
25	São João do Piauí	21,421	0.7%
26	Paulistana	21,055	0.6%
27	Buriti dos Lopes	19,654	0.6%
28	Canto do Buriti	19,365	0.6%
29	Castelo do Piauí	19,288	0.6%
30	Pio IX	17,613	0.5%
31	Água Branca	17,573	0.5%
32	São Miguel do Tapuio	17,554	0.5%
33	Jaicós	17,527	0.5%
34	Amarante	17,234	0.5%
35	Regeneração	17,133	0.5%
36	Demerval Lobão	16,352	0.5%
37	Inhuma	14,958	0.5%
38	Simões	14,350	0.4%
39	Joaquim Pires	13,886	0.4%
40	Simplício Mendes	13,870	0.4%
41	São Pedro do Piauí	13,755	0.4%
42	Elesbão Veloso	13,607	0.4%
43	Alto Longá	13,479	0.4%
44	Baixa Grande do Ribeiro	13,272	0.4%
45	Palmeirais	13,264	0.4%
46	Porto	12,052	0.4%
47	Pimenteiras	11,341	0.3%
48	Curimatá	11,270	0.3%
49	Capitão de Campos	11,100	0.3%
50	Gilbués	10,892	0.3%
51	Avelino Lopes	10,866	0.3%
52	Itainópolis	10,790	0.3%
53	Monte Alegre do Piauí	10,660	0.3%
54	Matias Olímpio	10,641	0.3%
55	Cristino Castro	10,503	0.3%
56	Itaueira	10,323	0.3%
57	Caracol	10,318	0.3%
58	Guadalupe	10,270	0.3%
59	Nazária	10,262	0.3%
60	Fronteiras	10,259	0.3%
61	Monsenhor Gil	10,255	0.3%
62	Cabeceiras do Piauí	10,212	0.3%
63	Parnaguá	10,103	0.3%
64	Beneditinos	9,929	0.3%
65	Murici dos Portelas	9,797	0.3%
66	Sigefredo Pacheco	9,460	0.3%
67	Ipiranga do Piauí	9,420	0.3%
68	Anísio de Abreu	9,407	0.3%
69	Ilha Grande	9,274	0.3%
70	Dom Inocêncio	9,159	0.3%
71	Queimada Nova	8,738	0.3%
72	Marcolândia	8,533	0.3%
73	Nossa Senhora dos Remédios	8,525	0.3%
74	Brasileira	8,436	0.3%
75	Redenção do Gurguéia	8,394	0.3%
76	Lagoa Alegre	8,256	0.3%
77	Francisco Santos	8,237	0.3%
78	São João do Arraial	8,186	0.3%
79	Madeiro	8,032	0.2%
80	Cajueiro da Praia	7,957	0.2%
81	Isaías Coelho	7,774	0.2%
82	Monsenhor Hipólito	7,577	0.2%
83	Assunção do Piauí	7,452	0.2%
84	Buriti dos Montes	7,434	0.2%
85	Campo Largo do Piauí	7,419	0.2%
86	Cristalândia do Piauí	7,356	0.2%
87	Dirceu Arcoverde	7,054	0.2%
88	Colônia do Piauí	6,994	0.2%
89	Boa Hora	6,902	0.2%
90	Angical do Piauí	6,827	0.2%
91	Alagoinha do Piauí	6,819	0.2%
92	Nazaré do Piauí	6,665	0.2%
93	Barro Duro	6,640	0.2%
94	São José do Piauí	6,597	0.2%
95	Boqueirão do Piauí	6,545	0.2%
96	Milton Brandão	6,542	0.2%
97	Morro do Chapéu do Piauí	6,425	0.2%
98	Acauã	6,420	0.2%
99	Cocal dos Alves	6,386	0.2%
100	Padre Marcos	6,382	0.2%
101	Lagoa de São Francisco	6,331	0.2%
102	Dom Expedito Lopes	6,320	0.2%
103	Betânia do Piauí	6,220	0.2%
104	Sussuapara	6,220	0.2%
105	Ribeiro Gonçalves	6,164	0.2%
106	Colônia do Gurguéia	6,150	0.2%
107	São João da Serra	6,114	0.2%
108	Novo Oriente do Piauí	6,097	0.2%
109	Santa Filomena	6,087	0.2%
110	São Julião	6,025	0.2%
111	Campo Grande do Piauí	6,020	0.2%
112	Bonfim do Piauí	5,913	0.2%
113	Santo Antônio de Lisboa	5,839	0.2%
114	Santa Cruz do Piauí	5,831	0.2%
115	Rio Grande do Piauí	5,801	0.2%
116	Bom Princípio do Piauí	5,636	0.2%
117	Caraúbas do Piauí	5,630	0.2%
118	Jacobina do Piauí	5,613	0.2%
119	São Francisco de Assis do Piauí	5,572	0.2%
120	Bertolínia	5,562	0.2%
121	São João da Fronteira	5,522	0.2%
122	Caldeirão Grande do Piauí	5,503	0.2%
123	Caxingó	5,496	0.2%
124	Geminiano	5,445	0.2%
125	Patos do Piauí	5,425	0.2%
126	Joca Marques	5,394	0.2%
127	São Francisco do Piauí	5,392	0.2%
128	Júlio Borges	5,388	0.2%
129	Aroazes	5,369	0.2%
130	Santa Luz	5,336	0.2%
131	Alvorada do Gurguéia	5,322	0.2%
132	Fartura do Piauí	5,284	0.2%
133	Nossa Senhora de Nazaré	5,228	0.2%
134	Massapê do Piauí	5,218	0.2%
135	Juazeiro do Piauí	5,214	0.2%
136	Landri Sales	5,213	0.2%
137	Manoel Emídio	5,209	0.2%
138	Curral Novo do Piauí	5,073	0.2%
139	Várzea Branca	5,055	0.2%
140	Caridade do Piauí	5,033	0.2%
141	Lagoa do Barro do Piauí	4,995	0.2%
142	Palmeira do Piauí	4,952	0.2%
143	Agricolândia	4,940	0.2%
144	Campinas do Piauí	4,938	0.2%
145	Conceição do Canindé	4,932	0.2%
146	Cocal de Telha	4,911	0.2%
147	Currais	4,854	0.1%
148	São José do Divino	4,841	0.1%
149	São Gonçalo do Piauí	4,837	0.1%
150	Lagoa do Piauí	4,810	0.1%
151	Marcos Parente	4,724	0.1%
152	Santa Rosa do Piauí	4,650	0.1%
153	Alegrete do Piauí	4,634	0.1%
154	Campo Alegre do Fidalgo	4,616	0.1%
155	Arraial	4,520	0.1%
156	Lagoa do Sítio	4,520	0.1%
157	Francinópolis	4,505	0.1%
158	Jerumenha	4,497	0.1%
159	Jatobá do Piauí	4,494	0.1%
160	Sebastião Leal	4,446	0.1%
161	Jurema	4,425	0.1%
162	Várzea Grande	4,417	0.1%
163	Flores do Piauí	4,414	0.1%
164	Curralinhos	4,413	0.1%
165	Francisco Ayres	4,412	0.1%
166	São Lourenço do Piauí	4,410	0.1%
167	São João da Varjota	4,383	0.1%
168	Eliseu Martins	4,377	0.1%
169	Morro Cabeça no Tempo	4,377	0.1%
170	São Braz do Piauí	4,358	0.1%
171	Guaribas	4,276	0.1%
172	Coronel José Dias	4,250	0.1%
173	São João da Canabrava	4,242	0.1%
174	Jardim do Mulato	4,180	0.1%
175	Riacho Frio	4,165	0.1%
176	Socorro do Piauí	4,141	0.1%
177	Passagem Franca do Piauí	4,135	0.1%
178	Santana do Piauí	4,125	0.1%
179	Coivaras	4,117	0.1%
180	Bela Vista do Piauí	4,091	0.1%
181	Paes Landim	4,088	0.1%
182	Bocaina	4,078	0.1%
183	Nova Santa Rita	4,076	0.1%
184	Domingos Mourão	4,075	0.1%
185	Wall Ferraz	4,059	0.1%
186	Ribeira do Piauí	4,055	0.1%
187	Barra D'Alcântara	3,995	0.1%
188	Capitão Gervásio Oliveira	3,974	0.1%
189	Brejo do Piauí	3,904	0.1%
190	Pau D'Arco do Piauí	3,880	0.1%
191	Paquetá	3,813	0.1%
192	Santo Inácio do Piauí	3,646	0.1%
193	Pavussu	3,628	0.1%
194	Hugo Napoleão	3,518	0.1%
195	Santa Cruz dos Milagres	3,435	0.1%
196	Belém do Piauí	3,423	0.1%
197	Canavieira	3,414	0.1%
198	São José do Peixe	3,297	0.1%
199	Barreiras do Piauí	3,264	0.100%
200	Sebastião Barros	3,202	0.098%
201	Vera Mendes	3,185	0.097%
202	Antônio Almeida	3,152	0.096%
203	Cajazeiras do Piauí	3,108	0.095%
204	Prata do Piauí	3,042	0.093%
205	Pajeú do Piauí	3,000	0.092%
206	João Costa	2,970	0.091%
207	Tamboril do Piauí	2,949	0.090%
208	São Gonçalo do Gurguéia	2,947	0.090%
209	Lagoinha do Piauí	2,939	0.090%
210	Vila Nova do Piauí	2,935	0.090%
211	Francisco Macedo	2,929	0.090%
212	São Félix do Piauí	2,842	0.087%
213	São Miguel do Fidalgo	2,829	0.086%
214	Novo Santo Antônio	2,827	0.086%
215	Aroeiras do Itaim	2,690	0.082%
216	Olho D'Água do Piauí	2,637	0.081%
217	Pedro Laurentino	2,458	0.075%
218	Porto Alegre do Piauí	2,364	0.072%
219	Floresta do Piauí	2,333	0.071%
220	Tanque do Piauí	2,316	0.071%
221	São Luis do Piauí	2,309	0.071%
222	São Miguel da Baixa Grande	2,269	0.069%
223	Santo Antônio dos Milagres	2,138	0.065%
224	Miguel Leão	1,318	0.040%

Intermediate geographic regions

IBGE division that groups municipalities around a hub city.

Intermediate region	People	% of state	Municipalities
Teresina	1,590,860	48.6%	65
Parnaíba	615,176	18.8%	30
Picos	474,020	14.5%	58
Floriano	237,573	7.3%	28
Corrente - Bom Jesus	192,162	5.9%	22
São Raimundo Nonato	161,408	4.9%	21

Frequently asked questions

What is the population of Piauí?

Piauí had 3,271,199 inhabitants in IBGE's 2022 Census. It is the 18th most populous state in the country, behind São Paulo, Minas Gerais, Rio de Janeiro and 14 others.

How many municipalities are there in Piauí?

Piauí has 224 municipalities. The most populous is Teresina, with 866,300 inhabitants.

What is the capital of Piauí and how many people live there?

The capital is Teresina, with 866,300 inhabitants in the 2022 Census (26.5% of the state's population).

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Download the data and cite it

Municipalities of Piauí with their 2022 Census population: CSV. Updated on Oct 26, 2026. How to cite: dadobruto.com. Piauí in numbers. Data: IBGE, 2022 Demographic Census (SIDRA table 4714). https://dadobruto.com/en/states/piaui

License: You may copy and republish the data and charts, including commercially, under the CC BY 4.0 license. The condition is to credit "dadobruto.com" and, when published online, to link to dadobruto.com or to the page the data came from. The original numbers follow the rules of IBGE, 2022 Demographic Census (SIDRA table 4714).