The Loch surname
In the 2010 U.S. Census, 2,481 people carried this name — #12,496 among all U.S. surnames, about 1 in every 119,000 people counted. That is up 5% from 2,368 in 2000.
Where the name comes from
The origin of the Loch surname
Perhaps from dialectal Polish łoch or East Slavic (compare Russian лох (lox)).
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Łoch» (Polish), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Poland’s population register
1,219 people named Loch have a registered home in Poland.
Of the 1,453 in Poland’s national register, these are the ones with a permanent address on file. They live in 15 of Poland’s 16 voivodeships, most of all in Silesian.
Where it concentrates, on the mapWhere they live today
PESEL register, Ministry of Digital Affairs of Poland (dane.gov.pl) — CC0 · living people by voivodeship of permanent residence, 20 January 2026.
In France’s civil register
France’s register of deaths holds 146 people named Loch.
35 of them were born outside France. Those born in France came from 20 départements, most often Moselle.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Argentina’s national register
At least 146 people named Loch live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Switzerland’s population statistics
57 people named Loch live in Switzerland.
They live in 7 of Switzerland’s 26 cantons, most of all in Zurich.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In the Nordic population registers
27 people named Loch is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
Counted, by country
Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown).
Who carried it
People named Loch,
with a public archive behind them.
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David Loch d. 1780 · writer
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Agnes Loch d. 1661
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David Henry Loch d. 1941
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Mary Freda Seymour d. 1968
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Clara Loch d. 1905
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George Loch d. 1877
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Loch.
- Lobel 1,068 · U.S. census
- Lobert 211 · U.S. census
- Lobo 4,830 · U.S. census
- Lobstein 156 · U.S. census
- Locatelli 512 · U.S. census
- Locati 219 · U.S. census
- Lochard 231 · U.S. census
- Loche 183 · U.S. census
- Locher 1,688 · U.S. census
- Lode 213 · U.S. census
- Lodi 431 · U.S. census
- Lodin 250 · U.S. census
When the index is not enough
This page says where Loch is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.