(a) (1) In 2030 and in each year ending in the number zero thereafter, the Department of Corrections and Rehabilitation shall furnish to the Legislature and the Citizens Redistricting Commission, in the form of a single electronic file for each database maintained by the department, information regarding each inmate incarcerated in a state correctional facility on the decennial Census Day. This information shall be furnished not sooner than the decennial Census Day and not later than 90 days after the decennial Census Day.

(2) The information furnished by the Department of Corrections and Rehabilitation pursuant to paragraph (1) shall include the following for each inmate:

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(A) A unique identifier, other than the inmate’s name or Department of Corrections and Rehabilitation number.

(B) Any information maintained by the Department of Corrections and Rehabilitation about the residential address or addresses at which the inmate was domiciled before the inmate’s most current term of incarceration, including any available information about the date on which each address was added to records maintained by the department. If the Department of Corrections and Rehabilitation does not have any residential address information for an inmate, the information furnished by the department shall state that fact.

(C) The inmate’s ethnicity, as identified by the inmate, and the inmate’s race, to the extent such information is maintained by the Department of Corrections and Rehabilitation.

(D) The address of the state correctional facility where the inmate is incarcerated on the decennial Census Day.

(3) The Department of Corrections and Rehabilitation shall exclude all inmates in federal custody in a facility within California from the information furnished pursuant to this section.

(b) In order to comply with its obligation to ensure that a complete and accurate computerized database is available for redistricting in accordance with subdivision (b) of § 8253 of the Government Code, the Legislature, in coordination with the Citizens Redistricting Commission, shall ensure that the information provided by the Department of Corrections and Rehabilitation pursuant to subdivision (a) is included in that computerized database.

(c) Notwithstanding subdivision (b), and regardless of the form in which the information is furnished by the Department of Corrections and Rehabilitation, the Legislature or the Citizens Redistricting Commission shall not publish information regarding the race, ethnicity, or prior residential addresses of specific inmates.

(d) Consistent with Section 2025, the Citizens Redistricting Commission shall deem each incarcerated person as residing at that person’s last known place of residence, rather than at the institution of that person’s incarceration, and shall use the information furnished to it pursuant to subdivision (a) in carrying out its redistricting responsibilities under Article XXI of the California Constitution. The Citizens Redistricting Commission shall also do all of the following when it uses information regarding inmates that is furnished pursuant to this section:

(1) Deem an inmate incarcerated in a state correctional facility for whom the last known place of residence is either outside California or cannot be determined, or an inmate in federal custody in a facility within California, to reside at an unknown geographical location in the state and exclude the inmate from the population count for any district, ward, or precinct.

(2) Adjust race and ethnicity data in districts, wards, and precincts that contain prisons in a manner that reflects reductions in the local population as inmates are included in the population count of the district, ward, or precinct of their last known place of residence and, to the extent practicable, those deemed to reside at an unknown geographic location.

(e) (1) For purposes of this section, “last known place of residence” means the most recent residential address of an inmate before the inmate’s most current term of incarceration that is sufficiently specific to be assigned to a census block, as determined from information furnished by the Department of Corrections and Rehabilitation in accordance with this section. In the case of an inmate for whom residential address information is available but is not sufficiently specific to allow the address to be assigned to a census block, the “last known place of residence” means a randomly determined census block located within the smallest geographical area that can be identified based on the residential address information furnished by the Department of Corrections and Rehabilitation.

(2) For purposes of this section, “state correctional facility” means a facility under the control of the Department of Corrections and Rehabilitation.

(Amended by Stats. 2022, Ch. 763, Sec. 2. (AB 1848) Effective January 1, 2023.)