Supplemental Security Income (SSI) Public-Use Microdata File, 2001 Data
A User Guide

Supplemental Security Income (SSI) Public-Use Microdata File, 2001 Data
Abstract
The SSI Public-Use Microdata File contains an extract of data fields from SSA’s Supplemental Security Record file and consists of a 5 percent random, representative sample of persons who received a federal SSI benefit in December 2001. This file contains approximately 320,000 records, with 13 data fields on each record.
Purpose
Not specified
Sample
SSI Recipients
Persons who received a federal SSI benefit in December 2001.
Study Citation
Title: Supplemental Security Income (SSI) Public-Use Microdata File, 2001 Data
Funding Information
Social Security Administration
Funding
Funded by the Social Security Administration
Social Security Administration
Also known as: Social Security
The United States Social Security Administration (SSA) is an independent agency of the United States federal government that administers Social Security, a social insurance program consisting of retirement, disability, and survivors’ benefits. To qualify for these benefits, most American workers pay Social Security taxes on their earnings.
Classifications
State (US) Codes
AL	Alabama	
AK	Alaska	
AZ	Arizona	
AR	Arkansas	
CA	California	
CO	Colorado	
CT	Connecticut	
DE	Delaware	
DC	District of Columbia	
FL	Florida	
GA	Georgia	
HI	Hawaii	
ID	Idaho	
IL	Illinois	
IN	Indiana	
IA	Iowa	
KS	Kansas	
KY	Kentucky	
LA	Louisiana	
ME	Maine	
MD	Maryland	
MA	Massachusetts	
MI	Michigan	
MN	Minnesota	
MS	Mississippi	
MO	Missouri	
MT	Montana	
NE	Nebraska	
NV	Nevada	
NH	New Hampshire	
NJ	New Jersey	
NM	New Mexico	
NY	New York	
NC	North Carolina	
ND	North Dakota	
OH	Ohio	
OK	Oklahoma	
OR	Oregon	
PA	Pennsylvania	
RI	Rhode Island	
SC	South Carolina	
SD	South Dakota	
TN	Tennessee	
TX	Texas	
UT	Utah	
VT	Vermont	
VA	Virginia	
WA	Washington	
WV	West Virginia	
WI	Wisconsin	
WY	Wyoming	
Sex Codes
M	Male	
F	Female	
U	Unspecified	
SSI Diagnosis Codes
0	Diagnosis unspecified/aged	
1	Mental retardation	
2	Mental disorders, other than retardation	
3	Physical diseases or disorders	
SSI Program Eligibility Codes
0	Unspecified	
1	Aged individual	
2	Aged spouse	
3	Disabled or blind individual	
4	Disabled or blind spouse	
5	Disabled or blind child	
Household composition Codes
0	Unspecified	
1	Aged individual living alone	
2	Aged individual living with spouse	
3	Disabled or blind individual living alone	
4	Disabled or blind individual living with spouse	
5	Disabled or blind child not living with parents	
6	Disabled or blind child living with one or more parent	
Living arrangement Codes
0	Unspecified (no longer in current payment status and has no FBR; indicates a back payment)	
1	Living in own household ($531 for an individual and $796 for an eligible couple)	
2	Living in another’s household ($354 for an individual and $530.67 for an eligible couple)	
3	Living in parent’s household and child under 18 ($531)	
4	Living in Medicaid institution ($30 for an individual and $60 for an eligible couple)	
Datasets
SSI-2001
Citation
Title: SSI-2001
Record type: Recipient
SSI Recipient
ID
Identifier
This is a numeric variable.
Summary Statistics
Minimum: 1
Maximum: 320473
Mean: 160237
StandardDeviation: NaN
ValidCases: 320473
InvalidCases: 0
STAT
State of residence of recipient
This field indicates the state of residence on record as of December 2001. Recipients from the outlying area of the Northern Mariana Islands are not included on this file.
This is a code variable.
AL	Alabama	8079	
AK	Alaska	458	
AZ	Arizona	4246	
AR	Arkansas	4260	
CA	California	46223	
CO	Colorado	2677	
CT	Connecticut	2482	
DE	Delaware	604	
DC	District of Columbia	991	
FL	Florida	19344	
GA	Georgia	9911	
HI	Hawaii	1025	
ID	Idaho	943	
IL	Illinois	12444	
IN	Indiana	4457	
IA	Iowa	2023	
KS	Kansas	1830	
KY	Kentucky	8797	
LA	Louisiana	8311	
ME	Maine	1509	
MD	Maryland	4463	
MA	Massachusetts	7385	
MI	Michigan	10314	
MN	Minnesota	3276	
MS	Mississippi	6428	
MO	Missouri	5663	
MT	Montana	705	
NE	Nebraska	1075	
NV	Nevada	1322	
NH	New Hampshire	598	
NJ	New Jersey	7005	
NM	New Mexico	2383	
NY	New York	28817	
NC	North Carolina	9589	
ND	North Dakota	407	
OH	Ohio	12092	
OK	Oklahoma	3640	
OR	Oregon	2712	
PA	Pennsylvania	14088	
RI	Rhode Island	1293	
SC	South Carolina	5350	
SD	South Dakota	636	
TN	Tennessee	8149	
TX	Texas	20928	
UT	Utah	1028	
VT	Vermont	564	
VA	Virginia	6646	
WA	Washington	5099	
WV	West Virginia	3648	
WI	Wisconsin	4267	
WY	Wyoming	289	
YOB
Year of birth of recipient
The field YOB is bottomcoded at 1912; that is, the actual year of birth is not shown when it is before 1912. Instead, each bottomcoded year of birth is replaced by the mean of year of birth computed for years before 1912 in the recipient’s state of residence.
The field YOB is topcoded at 1997; that is, the actual year of birth is not shown when it is after 1997. Instead, each topcoded year of birth is replaced with 1999, which is the national mean of all those born after 1997.
This is a date/time variable.
SEX
Sex of recipient
This is a code variable.
M	Male	133557	
F	Female	186905	
U	Unspecified	11	
DIAG
Primary diagnosis of recipient
The primary diagnosis for recipients aged 64 or younger is the primary condition for which the recipient is receiving payments. The diagnostic code is “0” for recipients aged 65 or older.
These diagnostic groupings closely parallel the major International Classification of Diseases, 9th Revision (ICD-9) disease classifications. The groupings shown here are aggregates of information on the Social Security Administration’s internal files and have been grouped together to limit detail as a disclosure avoidance activity.
This is a code variable.
0	Diagnosis unspecified/aged	111380	
1	Mental retardation	53222	
2	Mental disorders, other than retardation	73630	
3	Physical diseases or disorders	82241	
DTEL
Date of eligibility
This field identifies the first year in which the recipient is eligible to receive payments. For children born after 1997, the exact year of eligibility is not shown for disclosure purposes. Instead, the year is recoded to 2000, which is the national mean of date of eligibility of all those born after 1997.
This is a date/time variable.
PREL
Program eligibility
This field identifies the criterion for a recipient’s program eligibility. Individuals must be at least 65 years old to qualify as aged for SSI. Individuals under age 65 must be blind or disabled to be eligible. For SSI, a child is defined as being under age 18, or under age 22 and in school or other training to prepare for a job, and unmarried.
This is a code variable.
0	Unspecified	0	
1	Aged individual	50366	
2	Aged spouse	7953	
3	Disabled or blind individual	201742	
4	Disabled or blind spouse	8935	
5	Disabled or blind child	51477	
HOUS
Household composition
This field describes the program category and the household composition of the recipient. Information about household composition is used to compute benefits and includes only household members whose presence affects the payment. Although this field can be used as a source for marital status for SSI program purposes, it does not indicate legal marital status. The spouse or parent(s) may also be eligible for SSI; however, this file cannot be used to identify eligible couples.
This is a code variable.
0	Unspecified	0	
1	Aged individual living alone	41284	
2	Aged individual living with spouse	17570	
3	Disabled or blind individual living alone	180437	
4	Disabled or blind individual living with spouse	36701	
5	Disabled or blind child not living with parents	4651	
6	Disabled or blind child living with one or more parent	39830	
LIVA
Living arrangement code
This field indicates the recipient’s federal living arrangement for December 2001. This information is used to determine the recipient’s SSI federal benefit rate (FBR), which is the maximum allowable monthly federal benefit if the person has no countable income. The rates are adjusted annually to reflect changes in the cost of living.
This is a code variable.
0	Unspecified (no longer in current payment status and has no FBR; indicates a back payment)	421	
1	Living in own household ($531 for an individual and $796 for an eligible couple)	263257	
2	Living in another’s household ($354 for an individual and $530.67 for an eligible couple)	13059	
3	Living in parent’s household and child under 18 ($531)	36601	
4	Living in Medicaid institution ($30 for an individual and $60 for an eligible couple)	7135	
FPMT
Federal money amount paid
This field indicates the actual federal money amount paid to a recipient in December 2001. FPMT includes the federal benefit payment for December 2001, and it may include back payments or may be reduced by an amount withheld to recover an overpayment.
Rounded FPMT is topcoded at $535; that is, the rounded value of FPMT is not shown when it exceeds $535. Instead, for each recipient’s state of residence, the state mean of values greater than the topcode replaces a topcoded value of FPMT on each data record. Approximately 2 percent of SSI recipients at the national level have an FPMT value that is equal to or greater than this topcode value. Since $531 is the maximum amount a person can receive unless they have back payments, the value of $531 is shown.
For an eligible couple, separate payments are made to each member of the couple. The FPMT for the eligible couple is determined by the joint FBR and joint countable income (see below). On this file, if the FPMT does not include a back payment (or payment recovery) for either member of the couple, the FPMT reflects half of the couple’s payment. Back payments due (or payment recovery) may be reflected in the FPMT of one or both members of the couple.
This is a numeric variable.
Summary Statistics
Minimum: 0
Maximum: 3468
Mean: 395.75485922371
StandardDeviation: NaN
ValidCases: 320473
InvalidCases: 0
FCNT
Federal countable income
This field represents the total amount of countable earned and unearned income that was charged in computing the recipient’s benefit payment for December 2001. The monthly FBR is reduced dollar for dollar by the amount of the person’s countable income, that is, income minus all applicable exclusions. For an eligible couple, the FCNT reflects half of the combined countable income of the couple.
Eligibility for benefits is determined on a current-month basis. However, the amount of the monthly benefit generally is determined using income received 2 months before the month in which the benefit is paid. Thus, for the majority of recipients, the FCNT value for December 2001 is derived by adding countable earned and unearned income received in October 2001. The total FCNT is then subtracted from the recipient’s FBR to determine the federal benefit payment for December 2001.
In many cases, the FCNT and FBR value cannot be used to precisely derive the FPMT field because the FPMT may include back payments or may be reduced by an amount withheld to recover an overpayment.
Rounded FCNT is topcoded at $510; that is, the rounded value of FCNT is not shown when it exceeds $510. Instead, for each recipient’s state of residence, the state mean of values greater than the topcode replaces a topcoded value of FCNT on each data record. Approximately 3 percent of SSI recipients at the national level have an FCNT value that is equal to or greater than this topcode value.
NOTE: For the following income fields, the value represents the income the recipient expects to receive in January 2002. Also, these values are anticipated gross amounts and do not take into account the various income exclusions that may be applied in order to compute FPMT. Accordingly, these fields cannot be compared directly with the FCNT on this file.
For an eligible couple, these income fields reflect the individual’s own income, not half the combined income as in the FCNT and FPMT fields.
This is a numeric variable.
Summary Statistics
Minimum: 0
Maximum: 1408
Mean: 148.047439253853
StandardDeviation: NaN
ValidCases: 320473
InvalidCases: 0
SSIN
Social Security income
This field represents the amount of unearned income received from Social Security benefits (Title II)—that is, the gross benefit amount before the Medicare Part B premium is deducted. Rounded SSIN is topcoded at $540; that is, the rounded value of SSIN is not shown when it exceeds $540. Instead, for each recipient’s state of residence, the state mean of values greater than the topcode replaces a topcoded value of SSIN on each data record. Approximately 3 percent of SSI recipients at the national level have an SSIN value that is equal to or greater than this topcode value.
This is a numeric variable.
Summary Statistics
Minimum: 0
Maximum: 650
Mean: 127.364255335083
StandardDeviation: NaN
ValidCases: 320473
InvalidCases: 0
UEIN
Unearned income other than Social Security income
This field represents the amount of unearned income received by a recipient from all sources excluding Social Security income. Rounded UEIN is topcoded at $195; that is, the rounded value of UEIN is not shown when it exceeds $195. Instead, for each recipient’s state of residence, the state mean of values greater than the topcode replaces a topcoded value of UEIN on each data record. Approximately 3 percent of SSI recipients at the national level have a UEIN value that is equal to or greater than this topcode value.
This is a numeric variable.
Summary Statistics
Minimum: 0
Maximum: 620
Mean: 15.0319652513628
StandardDeviation: NaN
ValidCases: 320473
InvalidCases: 0
ERIN
Earned income
This field represents the amount of earned income a recipient receives through wages or earnings from self-employment. For those with earned income of $65 or less, the value is shown as zero because of the $65 income exclusion. For those with earned income greater than $65, the state mean of values greater than $65 replaces the value of ERIN on each data record. Approximately 3 percent of SSI recipients at the national level have an ERIN value that is equal to or greater than $65.
This is a numeric variable.
Summary Statistics
Minimum: 0
Maximum: 885
Mean: 12.3437637492082
StandardDeviation: NaN
ValidCases: 320473
InvalidCases: 0
Related Organizations
SSI Organizations
Social Security Administration
Also known as: Social Security
The United States Social Security Administration (SSA) is an independent agency of the United States federal government that administers Social Security, a social insurance program consisting of retirement, disability, and survivors’ benefits. To qualify for these benefits, most American workers pay Social Security taxes on their earnings.