Old Maps of San Lorenzo
Explore 35 old maps of San Lorenzo, spanning from 1946 to today. These high-resolution historic maps reveal how streets, neighborhoods, landmarks, and natural features evolved over time — perfect for genealogy, metal detecting, research, and local history exploration.
What you can do with these maps:
- See how San Lorenzo changed over time: Compare historical maps to modern-day views to trace roads, homesites, rail lines & more.
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- Trusted historical sources: Maps sourced from the USGS, Library of Congress, and other archives.
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Start exploring old maps of San Lorenzo to uncover forgotten places, hidden landmarks, and the deep history beneath your feet.
San Lorenzo maps
(35)- 1946 Map of Patillas
1946 Patillas1946 Print · USGSPatillas and the surrounding mountain ridges come into focus in the mid-1940s as hydroelectric power and agriculture shaped the region. Genealogists and researchers can trace the vicinity of Hacienda Felicita and local schools like Escuela Segunda Unidad de Guamani.2 unique versions available - 1946 Map of Juncos
1946 Juncos1946 Print · USGSEastern Puerto Rico’s agricultural heartland is documented here in the mid-1940s, centered on the growing municipalities of Juncos and San Lorenzo. Genealogists and researchers can trace local family lands near the Escuela Segunda Unidad de Quebrada Honda and the fields of Eastern Sugar Associates.3 unique versions available - 1946 Map of Yabucoa
1946 Yabucoa1946 Print · USGSSoutheastern Puerto Rico during the mid-forties reveals a landscape defined by its sugar industry and coastal mountains. Genealogists and historians can trace the social geography of the era through the locations of Central Roig, Colonia Laura, and the heights of Cerro La Pandura.3 unique versions available - 1946 Map of Caguas
1946 Caguas1946 Print · USGSCaguas and its surrounding sugar-producing valleys are captured here in the years following World War II. Local historians can trace the early industrial footprint of Central Santa Juana and find ancestral locations near Capilla San Patricio or the rural school at Escuela Segunda Unidad de Turabo.2 unique versions available - 1947 Map of Caguas NE
1947 Caguas NE1947 Print · USGSCaguas was a burgeoning hub of industry and agriculture in the mid-1940s, centered at the meeting of the Turabo and Caguitas rivers. Genealogists and historians can locate the Escuela Segunda Unidad de Turabo and industrial sites like Central Santa Juana. - 1947 Map of Juncos NE
1947 Juncos NE1947 Print · USGSJuncos and its surrounding sugar lands are captured here in the late 1940s, just after the war. Researchers can trace the industrial footprint of the Central Juncos mill and the rail lines of Eastern Sugar Associates along the Río Gurabo. - 1947 Map of Patillas NE
1947 Patillas NE1947 Print · USGSThe interior mountains of southeastern Puerto Rico are captured here in the late 1940s, showing the high-elevation divide of the Sierra de Cayey. Local researchers can trace the early boundaries of the Bosque Insular de Carite and find remote landmarks like Campamento Real and Charco Azul. - 1947 Map of Juncos SO
1947 Juncos SO1947 Print · USGSSan Lorenzo's rural interior comes into focus during the mid-forties, showing the density of homesteads along the river valleys. Genealogists and researchers can locate landmarks like the Escuela Segunda Unidad de Quebrada Honda and trace family-named streams including Quebrada Salvatierra. - 1947 Map of Juncos SE
1947 Juncos SE1947 Print · USGSThe interior of Las Piedras in the late 1940s reveals a network of mountain trails and municipal boundaries centered on Cerro Vistazo. Genealogists and historians can trace the headwaters of the Río Valenciano and Río Humacao through several municipal jurisdictions. - 1947 Map of Juncos NO
1947 Juncos NO1947 Print · USGSSan Lorenzo and the surrounding highlands are captured in detail just after the war, showing the area's transition into the mid-century. Researchers can trace the early town grid near the Río Grande de Loíza or locate rural homesteads in Cantagallo. - 1947 Map of Yabucoa NE
1947 Yabucoa NE1947 Print · USGSSoutheastern Puerto Rico's sugar country and mountain barrios are documented in detail during the late 1940s. Genealogists and historians can trace local family life near the Escuela Calabaza Arriba or industrial roots at Central Roig. - 1947 Map of Yabucoa NO, 1948 Print
1947 Yabucoa NO1948 Print · USGSSoutheast Puerto Rico’s interior hills are captured here in the late 1940s, showing a landscape defined by traditional rural life and complex waterways. Genealogists can locate family sites near Escuela La Aldea or along the Río Guayanés and Quebrada Lajas. - 1952 Map of Yabucoa, 1953 Print
1952 Yabucoa1953 Print · USGSSoutheastern Puerto Rico is documented here in the early fifties, showing the vibrant sugar-mill economy and coastal settlements of the era. Genealogists and researchers can trace local families through sites like Central Roig, Parcelas Martorell, and the Escuela C S Ridley.2 unique versions available - 1952 Map of Patillas, 1953 Print
1952 Patillas1953 Print · USGSSoutheastern Puerto Rico is depicted here during the mid-twentieth century, showcasing the vital water and power systems of the Sierra de Cayey. Researchers can locate agricultural landmarks like Hacienda Felicita and public works including the Carite No. 1 hydroelectric plant.2 unique versions available - 1952 Map of Caguas, 1953 Print
1952 Caguas1953 Print · USGSCaguas and the surrounding interior highlands are captured here in the early fifties, documenting the local sugar economy and mountain settlements. Researchers can locate family landmarks like Central Santa Juana, the Escuela Segunda Unidad de Turabo, and Capilla San Patricio.2 unique versions available - 1952 Map of Juncos, 1953 Print
1952 Juncos1953 Print · USGSEastern Puerto Rico in the early fifties reveals a landscape of sugar production and mountain mining. Genealogists and historians can trace family roots through the barrio sectors of Juncos and San Lorenzo or locate the Mina de Hierro and Central Juncos.2 unique versions available - 1957 Map of Caguas, 1959 Print
1957 Caguas1959 Print · USGSCaguas and its surrounding mountain barrios are shown here in the late fifties, just as the island's infrastructure was expanding. Genealogists and researchers can trace local landmarks like the Central Santa Juana, the Escuela Segunda Unidad de Turabo, and Capilla San Patricio.2 unique versions available - 1958 Map of Juncos, 1960 Print
1958 Juncos1960 Print · USGSJuncos and San Lorenzo are captured here during a period of industrial sugar production and rural educational growth. Genealogists can locate family landmarks like Escuela Fraternidad Humana, the Central Juncos mill, and the inactive mine near Gurabo Arriba. - 1960 Map of Yabucoa, 1961 Print
1960 Yabucoa1961 Print · USGSSoutheastern Puerto Rico is mapped here in the early sixties, showing the vital sugar industry and mountain settlements before modern expansion. Genealogists can locate family sites like Laura and Columbia, or local institutions such as Escuela Matías Sánchez and Central Roig.3 unique versions available - 1960 Map of Patillas, 1962 Print
1960 Patillas1962 Print · USGSSoutheast Puerto Rico's mountain interior and the municipality of Patillas are captured here in the early sixties. Researchers can trace the layout of rural mountain life through landmarks like Campamento Guavate and Campamento Real.2 unique versions available - 1964 Map of Caguas, 1966 Print
1964 Caguas1966 Print · USGSMid-century Caguas is documented here during a period of rapid suburban growth and civic development. Genealogists and local historians can trace neighborhood foundations like El Condado and El Verde, or locate family landmarks including Escuela Gerardo Sellés Solá and Cementerio de Caguas.4 unique versions available - 1967 Map of Juncos, 1969 Print
1967 Juncos1969 Print · USGSJuncos and the surrounding valley are captured in the late sixties, showcasing the intersection of industrial sites and dozens of rural schools. Researchers can trace the layout of Central Juncos, locate the Iglesia de la Placita, or find family-named sites like Escuela Manuel Torres.5 unique versions available - 1972 Map of Patillas, 1974 Print
1972 Patillas1974 Print · USGSSoutheast Puerto Rico in the early seventies shows a landscape defined by the Sierra de Cayey and its vital reservoirs. Genealogists and local historians can trace family locations through rural barrios like Yaurel, identify local schools such as Escuela Leonor Ramos, and locate landmarks like Lago Patillas.4 unique versions available - 2013 Map of Patillas, 2013 Print
2013 Patillas2013 Print · USGSCovers San Lorenzo, including Patillas, Sector Hormiga, and other nearby areas - 2013 Map of Juncos, 2013 Print
2013 Juncos2013 Print · USGSCovers San Lorenzo, including Juncos, La Placita, and other nearby areas
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