The ISAAC surname in the USA

Frequency Comparisons
	Total	Rank	Frequency %	Per million people
United States
United States (Current snapshot)	16,312	2039	0.006	60
United States (1880 census)	1,870	3158	0.004	37
Change since 1880	+14442	+1119	+0.002	+23
Other Countries
Australia	903	1813	0.006	55
United Kingdom	4,055	1547	0.009	88

Top States for ISAAC by Total
State	Total	Rank in State	Frequency %	Per million people
California	1,466	2373	0.004	43
New York	1,351	1479	0.007	71
Florida	1,286	1754	0.008	80
Texas	1,209	2179	0.006	58
Ohio	919	1623	0.008	81
Top States for ISAAC by Frequency
State	Total	Rank in State	Frequency %	Per million people
South Carolina	684	1059	0.017	170
Louisiana	697	1046	0.016	156
Kentucky	618	1035	0.015	153
Mississippi	322	1425	0.011	113
Maryland	590	1120	0.011	111

Notes

Total is the total number of people with that surname.
Rank is the position in the list of names ordered by total (eg, a rank of 1 means that it's the most common name, and a rank of 10 means it's the tenth most common, etc).
Frequency is the percentage of people with that surname.
Per million people is the number of people with that surname per million of the population.

'A figure of zero indicates that we don't have data for this name (usually because it's quite uncommon and our stats don't go down that far). It doesn't mean that there's no-one with that name at all!

For less common surnames, the figures get progressively less reliable the fewer holders of that name there are. This data is aggregated from several public lists, and some stats are interpolated from known values. The margin of error is well over 100% at the rarest end of the table!

For less common surnames, the frequency and "per million" values may be 0 even though there are people with that name. That's because they represent less than one in a million of the population, which ends up as 0 after rounding.

It's possible for a surname to gain in rank and/or total while being less common per million people (or vice versa) as there are now more surnames in the USA as a result of immigration. In mathematical terms, the tail has got longer, with a far larger number of less common surnames.

Figures for top states show firstly the states where most people called ISAAC live. This obviously tends to be biased towards the most populous states. The second set of figures show where people called ISAAC represent the biggest proportion of the population. So, in this case, there are more people called ISAAC in California than any other state, but you are more likely to find a ISAAC by picking someone at random in South Carolina than anywhere else.

Classification and Origin of ISAAC

Region of origin: British Isles

Country of origin: England

Language of origin: English

Ethnic origin: English

Religious origin: Christian

Name derivation: From given name or forename

Data for religion and/or language relates to the culture in which the ISAAC surname originated. It does not necessarily have any correlation with the language spoken, or religion practised, by the majority of current American citizens with that name.

Data for ethnic origin relates to the region and country in which the ISAAC surname originated. It does not necessarily have any correlation with the ethnicity of the majority of current American citizens with that name.

Ethnic distribution of ISAAC in the USA

Classification	Total	Percent
Asian/Pacific	594	3.64
Native American/Alaskan	493	3.02
Mixed Race	396	2.43
White (Caucasian)	7,146	43.81
Black/African American	6,510	39.91
White (Hispanic)	1,174	7.2

Ethnic distribution data shows the number and percentage of people with the ISAAC surname who reported their ethnic background as being in these broad categories in the most recent national census.

Similar names to ISAAC

The following names have similar spellings or pronunciations as ISAAC.

This does not necessarily imply a direct relationship between the names, but may indicate names that could be mistaken for this one when written down or misheard.