Montes Llanos (English Wikipedia)

Barrios de Ponce. Archived 30 September 2015 at the Wayback Machine Antepasados Esclavos.(From: Pedro Tomás de Córdoba. Memorias geográficas, históricas, económicas y estadísticas de la Isla de Puerto Rico.) Retrieved 28 November 2014.

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U.S. Census Bureau. Census 2000. Ponce and Its Barrios. (Ponce Municipio, Puerto Rico -- County Subdivision and Place. GCT-PH1. Population, Housing Units, Area, and Density: 2000. Data Set: Census 2000 Summary File 1 (SF 1) 100-Percent Data) Archived 12 February 2020 at archive.today Retrieved March 15, 2010.
"CENSUS2". Archived from the original on 12 February 2020. Retrieved 16 March 2010.

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Ponce, Puerto Rico – La Perla del Sur. BoricuaOnline.com Accessed 5 April 2018.

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"Table 3-Population of Municipalities: 1930 1920 and 1910" (PDF). United States Census Bureau. Archived (PDF) from the original on 17 August 2017. Retrieved 21 September 2017.
"Table 4-Area and Population of Municipalities Urban and Rural: 1930 to 1950" (PDF). United States Census Bureau. Archived (PDF) from the original on 30 August 2015. Retrieved 21 September 2014.

factfinder.census.gov

U.S. Census Bureau. Census 2000. Ponce and Its Barrios. (Ponce Municipio, Puerto Rico -- County Subdivision and Place. GCT-PH1. Population, Housing Units, Area, and Density: 2000. Data Set: Census 2000 Summary File 1 (SF 1) 100-Percent Data) Archived 12 February 2020 at archive.today Retrieved March 15, 2010.
"CENSUS2". Archived from the original on 12 February 2020. Retrieved 16 March 2010.

census.gov

"Table 2 Population and Housing Units: 1960 to 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on 24 July 2017. Retrieved 21 September 2017.

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City Melt Retrieved March 15, 2010.
City Melt Retrieved, March 15, 2010.

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General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Archived 2010-08-12 at the Wayback Machine Retrieved March 15, 2010.
Maptest. Archived 2010-02-18 at the Wayback Machine Government of the Commonwealth of Puerto Rico. General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Retrieved 14 November 2011.

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Puerto Rico:2010:population and housing unit counts.pdf (PDF). U.S. Dept. of Commerce, Economics and Statistics Administration, U.S. Census Bureau. 2010.
Puerto Rico: 2010 Population and Housing Unit Counts.pdf (PDF). U.S. Dept. of Commerce Economics and Statistics Administration U.S. Census Bureau. 2010. Archived (PDF) from the original on 20 February 2017. Retrieved 2 August 2019.

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U.S. Geological Survey Geographic Names Information System: Monte Llano barrio

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Nuevo Mapa de Localizacion Limite de Barrios de Ponce. Oficina de Ordenacion Territorial. Municipio Autonomo de Ponce. Retrieved March 25, 2010.

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Ponce Topographic Map. Map Styles: Map and Shaded. Trails.com. From: United States Geological Survey. Topo Map. Projection: NAD83/WGS84. Retrieved March 15, 2010.

web.archive.org

Barrios de Ponce. Archived 30 September 2015 at the Wayback Machine Antepasados Esclavos.(From: Pedro Tomás de Córdoba. Memorias geográficas, históricas, económicas y estadísticas de la Isla de Puerto Rico.) Retrieved 28 November 2014.
General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Archived 2010-08-12 at the Wayback Machine Retrieved March 15, 2010.
"Report of the Census of Porto Rico 1899". War Department Office Director Census of Porto Rico. Archived from the original on 16 July 2017. Retrieved 21 September 2017.
"Table 3-Population of Municipalities: 1930 1920 and 1910" (PDF). United States Census Bureau. Archived (PDF) from the original on 17 August 2017. Retrieved 21 September 2017.
"Table 4-Area and Population of Municipalities Urban and Rural: 1930 to 1950" (PDF). United States Census Bureau. Archived (PDF) from the original on 30 August 2015. Retrieved 21 September 2014.
"Table 2 Population and Housing Units: 1960 to 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on 24 July 2017. Retrieved 21 September 2017.
Puerto Rico: 2010 Population and Housing Unit Counts.pdf (PDF). U.S. Dept. of Commerce Economics and Statistics Administration U.S. Census Bureau. 2010. Archived (PDF) from the original on 20 February 2017. Retrieved 2 August 2019.
Maptest. Archived 2010-02-18 at the Wayback Machine Government of the Commonwealth of Puerto Rico. General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Retrieved 14 November 2011.