Companies in Buenos Aires Province, Argentina
308,931 company records from the Registro Nacional de Sociedades, 290,608 active, data as of 2026-09-18: sectors, municipalities, size and age mix, monthly openings.
With 308,931 records (290,608 active) as of 2026-09-18, Buenos Aires Province holds 24.3% of the companies in Argentina's Registro Nacional de Sociedades and is 2nd of 24 provinces by count. The largest sectors are wholesale and retail (49,976), other services (33,333), manufacturing (29,479). Relative to the national mix, manufacturing is the most over-represented sector (location quotient 1.48).
Mar del Plata Sur is the largest municipality with 12,198 active companies (4.2%), ahead of Mar del Plata Norte and Bahia Blanca. The median active company is 19.5 years old and 6% were registered in the last three years. 6,778 new businesses were registered in the 12 months to June 2026, -5.5% on the previous 12 months, against +4.0% for Argentina as a whole. 95.0% of the active records are in the clean B2B universe (private, not sole-owner, name unmasked).
Companies by sector
LQ = location quotient: the section's share of Buenos Aires Province divided by its share of Argentina. Above 1 = over-represented. Linked sectors have their own Buenos Aires Province page.
New businesses per month in Buenos Aires Province
Head offices of private, non-sole-owner companies by contract date, outside public administration and associations; last 24 complete months.
Show the numbers
| Month | Openings |
|---|---|
| June 2026 | 510 |
| May 2026 | 525 |
| April 2026 | 544 |
| March 2026 | 624 |
| February 2026 | 391 |
| January 2026 | 316 |
| December 2025 | 579 |
| November 2025 | 630 |
| October 2025 | 705 |
| September 2025 | 670 |
| August 2025 | 578 |
| July 2025 | 706 |
| June 2025 | 631 |
| May 2025 | 707 |
| April 2025 | 646 |
| March 2025 | 614 |
| February 2025 | 446 |
| January 2025 | 228 |
| December 2024 | 552 |
| November 2024 | 758 |
| October 2024 | 735 |
| September 2024 | 597 |
| August 2024 | 687 |
| July 2024 | 569 |
New businesses per month, Buenos Aires Province.
Largest municipalities
| City / municipality | Active | Share |
|---|---|---|
| Mar del Plata Sur | 12,198 | 4.2% |
| Mar del Plata Norte | 9,821 | 3.4% |
| Bahia Blanca | 8,919 | 3.1% |
| La Plata Noroeste Calle 50 | 7,669 | 2.6% |
| Lanus | 5,808 | 2.0% |
| La Plata Sudeste Calle 50 Ambas Veredas | 5,478 | 1.9% |
| Quilmes | 5,063 | 1.7% |
| Avellaneda | 4,694 | 1.6% |
| Lomas de Zamora | 4,647 | 1.6% |
| Tandil | 4,148 | 1.4% |
Size mix
| size_class | Active | Share |
|---|---|---|
| unknown | 290,608 | 100.0% |
Argentina publishes no size field.
Company age
| Company age | Active | Share |
|---|---|---|
| under 1 year | 4,576 | 1.6% |
| 1–3 years | 13,337 | 4.7% |
| 3–5 years | 16,099 | 5.6% |
| 5–10 years | 37,394 | 13.1% |
| 10–20 years | 75,505 | 26.4% |
| 20 years or more | 139,133 | 48.6% |
Preview: 10 companies
| Company | City | ISIC division | Size | Registered |
|---|---|---|---|---|
| CONSEJO PASTORAL DEL PARTIDO DE QUILMES | San Jose | 94 Activities of membership organizations | unknown | 2015 |
| CONSTRUCCIONES TROIANO S.R.L. | Wilde | 41 Construction of buildings | unknown | 2010 |
| ASOCIACION CIVIL PEQUEÑA OBRA DE LA DIVINA PROVIDENCIA INST SECUNDARIO DON ORIONE | Mar del Plata Sur | 85 Education | unknown | 1951 |
| BIBLIOTECA POPULAR JOSE MURILLO | Villa Zagala | 91 Libraries, archives, museums and other cultu… | unknown | 2003 |
| RICARDO IANNIELLO S.R.L. | Mar de Ajo | 41 Construction of buildings | unknown | 2013 |
| PCIA DE STA TERESA DE JESUS Y SAN JUAN DE LA CRUZ DE CASTILLA DE LA O B V MARIA | Banfield | 94 Activities of membership organizations | unknown | 1980 |
| CAIV | Berazategui | 43 Specialized construction activities | unknown | 1999 |
| PAPELERA LUZ DEL SUR SRL | Burzaco | 46 Wholesale trade, except of motor vehicles an… | unknown | 2017 |
| MACCHI HNOS S A AVICOLA Y AGRICOLA GANADERA | General Rodriguez | 68 Real estate activities | unknown | 1987 |
| MONTREAL NUTRITION S.A. | General Piran | 10 Manufacture of food products | unknown | 2010 |
Ten companies in Buenos Aires Province drawn at random (seeded) from the clean B2B universe: active, private, not sole-owner, head office. Same public fields as the free samples; no contact data.
Questions about Buenos Aires Province
How many companies are registered in Buenos Aires Province?
308,931 records in the Registro Nacional de Sociedades as of 2026-09-18: 290,608 active and 276,088 in the clean B2B universe (active, private, not sole-owner, name unmasked).
What are the largest sectors in Buenos Aires Province?
Wholesale and retail trade; repair of motor vehicles (49,976); Other service activities (33,333); Manufacturing (29,479).
Which municipalities in Buenos Aires Province have the most companies?
Mar del Plata Sur (12,198), Mar del Plata Norte (9,821), Bahia Blanca (8,919) active companies.
How many new companies opened in Buenos Aires Province in the last 12 months?
6,778 businesses in the 12 months to June 2026 (-5.5% year on year), by contract date, head offices of private non-sole-owner companies.
Can I buy a list of companies in Buenos Aires Province?
Yes: a custom cut of Buenos Aires Province by sector, city, size or age costs US$450 (CSV and Parquet, two business days), the whole Argentina file is US$349, and an annual licence with refreshes starts at US$2,900.
Other provinces in Argentina
Need a list of companies in Buenos Aires Province?
Sector, city, size, age, website: a custom cut costs US$450 and ships in two business days with the row count agreed first.