Information System of Population Records

The Population Registration Information System (also referred to as ISEO or AISEO) is regulated by Act No. 133/2000 Coll., on Population Registration and Birth Numbers and on Amendments to Certain Acts (Act on Population Registration), as amended, is one of the basic information systems of the public administration and its purpose is to process data on the population of the Czech Republic, e.g. collecting and storing this data and providing it to authorised entities. The Ministry of the Interior is the administrator of the information system of population registration.

The processors of the data recorded in the information system of population registration to the extent provided for by law are the Ministry of the Interior, regional authorities, municipal authorities of municipalities with extended competence and reporting offices, i.e. in the capital city of Prague and in the cities of Brno, Ostrava and Plzeň, the offices of municipal districts or urban districts, if the statutes of these cities so provide, and in the territory of military districts, district offices.

The users of the data kept in the information system of population registration in the scope provided by law are:

the Ministry of the Interior (Section 3(5) of the Population Registration Act),

Regions and regional authorities, municipal authorities of municipalities with extended competence, municipalities and municipal authorities (§ 3a, 4 and 5 of the Population Registration Act),

the Ministry of Foreign Affairs (Section 8 of the Population Registration Act),

entities that obtain personal data on the basis of special legislation or if an international treaty to which the Czech Republic is bound so provides,

residents (§ 8(3) and (4) of the Population Registration Act).

The Population Registration Information System is one of the editors of the basic population register and thus editorial information systems.

Statistics from the Population Registration Information System

Persons who have the same first name, last name and date of birth:

Current surname, given name and date of birth - living persons (the total number of living persons over which searches were conducted was 10,366,872):

Size (tuple)	Number of tuples	Number of persons	Remark
4	1	4	There are 4 persons who have all the data matching. That is, there are 4x Jan Novák born 1.1.1990
3	109	327	There are a total of 109 different combinations of "current surname, first name and date of birth" that are common to three people. That is, there are 109 times a trio of people who have the same first name, last name and date of birth
2	12 221	24 442	There are a total of 12 221 different combinations of "current surname, first name and date of birth" that are common to two people. That is, there are 12,221 pairs of people who have the same first name, last name and date of birth
Total	12,331	24,773	There are about 25,000 people for whom the "current surname, first name and date of birth" data are not unique.

Surname, first name and date of birth - living persons (total number of living persons searched was 10 366 872):

Size (tuple)	Number of tuples	Number of persons	Remark
3	124	372	There are a total of 124 different combinations of "maiden name, family name and date of birth" that are common to three people each time.
2	12 564	25 128	dtto
Total	12 688	25 500	There are more than 25 000 persons for whom the data "maiden name, family name and date of birth" are not unique.

Surname, first name and date of birth - living persons + deceased persons:

Size (tuple)	Number of tuples	Number of persons	Remark
4	1	4	There are 4 persons with the same data.
3	251	753	There are a total of 251 different combinations of "maiden name, family name and date of birth" that are common to three people each time.
2	19 487	38 974	dtto
Total	19,739	39,731	There are about 40,000 persons (living+deceased) for whom the data "maiden name, family name and date of birth" are not unique.

Persons who have the same first name, last name, date of birth and place of birth:

Current surname, given name, date of birth and place of birth - living persons (the total number of living persons over whom the search was conducted was 10,366,872):

Size (tuple)	Number of tuples	Number of persons	Remark
2	283	566	There are 566 persons for whom the data "current surname, first name, date of birth and place of birth" are not unique.

Last name, first name, date of birth and place of birth - living persons (the total number of living persons searched was 10,366,872):

Size (tuple)	Number of tuples	Number of persons	Remark
2	322	644	There are 644 persons for whom the data "maiden name, first name, date of birth and place of birth" are not unique.

Surname, first name, date of birth and place of birth (in case of deceased persons, place of death is considered) - living persons + deceased persons:

Size (tuple)	Number of tuples	Number of persons	Remark
2	499	998	There are 998 persons (living + deceased) for whom the data "maiden name, first name, date of birth and place of birth (or place of death for deceased persons)" are not unique.

Persons who have the same first name, last name, date of birth, place of birth and place of residence:

Current surname, first name, date of birth, place of birth and place of residence - living persons (the total number of living persons over whom searches were conducted was 10,366,872):

Size (tuple)	Number of tuples	Number of persons	Remark
2	10	20	There are 20 persons for whom the data "current surname, first name, date of birth, place of birth and place of residence" are not unique.

Last name, first name, date of birth, place of birth and place of residence - living persons (the total number of living persons searched was 10,366,872):

Size (tuple)	Number of tuples	Number of persons	Remark
2	12	24	There are 24 persons for whom the data "maiden name, first name, date of birth, place of birth and place of residence" are not unique.

Surname, first name, date of birth, place of birth (in case of deceased persons, place of death is considered) and place of residence - living persons + deceased persons:

Size (tuple)	Number of tuples	Number of persons	Remark
2	65	130	There are 130 persons (living + deceased) for whom the data "maiden name, first name, date of birth, place of birth (or place of death for deceased persons) and place of permanent residence" are not unique.