National Public Opinion Reference Survey Npors Ssrs

The National Public Opinion Reference Survey (NPORS) is an annual survey of U.S. adults conducted by Pew Research Center. Respondents may answer by paper, online or over the phone. Pew Research Center uses NPORS to produce benchmark estimates for several topics, such as Americans’ political and religious affiliations. Read a detailed description of how the survey is conducted, as well as more information about how the Center uses NPORS. SSRS conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol.

Numbers, Facts and Trends Shaping Your World NPORS is an annual survey of U.S. adults conducted by Pew Research Center. Respondents can answer either by paper or online, and they are selected using address-based sampling from the USPS’s computerized delivery sequence file. Respondents are not required to join a survey panel. Pew Research Center uses NPORS to produce benchmark estimates for several topics, such as Americans’ political and religious affiliations

901 E St. NW, Suite 300Washington, DC 20004USA(+1) 202-419-4300 | Main(+1) 202-857-8562 | Fax(+1) 202-419-4372 | Media Inquiries ABOUT PEW RESEARCH CENTER Pew Research Center is a nonpartisan, nonadvocacy fact tank that informs the public about the issues, attitudes and trends shaping the world. It does not take policy positions. The Center conducts public opinion polling, demographic research, computational social science research and other data-driven research. Pew Research Center is a subsidiary of The Pew Charitable Trusts, its primary funder.

We use cookies and other technologies to help improve your experience; some are necssary for the site to work, and some are optional. Lean more in our privacy policy. Real people. Real impact. Real world examples. The Pew Charitable Trusts and SSRS released polling on Philadelphians views of the opioid crisis and the impact on communities.

Conducted by SSRS for the Pew Charitable Trusts Conducted by SSRS for the Pew Charitable Trusts Survey Conducted on the SSRS Opinion Panel SSRS conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol. The survey was fielded from Feb. 5, 2025, to June 18, 2025.

Participants were first mailed an invitation to complete an online survey. A paper survey was later mailed to those who did not respond. Additionally, the mailings invited participants to call a toll-free number to take the survey over the phone with a live interviewer. In total, 2,349 respondents completed the survey online, 2,331 respondents completed the paper survey, and 342 respondents completed the survey over the phone (total n=5,022). The survey was administered in English and Spanish. The AAPOR Response Rate 1 was 29%.

The sample was drawn from the U.S. Postal Service Computerized Delivery Sequence File and was provided by MSG (Marketing Systems Group). Occupied residential addresses (including “drop points”) in all U.S. states (including Alaska and Hawaii) and the District of Columbia had a nonzero chance of selection. The draw was a national, stratified random sample, with differential probabilities of selection across the mutually exclusive strata. SSRS designed the sample plan as shown in the table above.

SSRS sent initial mailings in a 9-by-12-inch window envelope via first-class mail to the 18,800 sampled households. These packets included two $1 bills (visible from the outside of the envelope) and a letter that asked a member of the household to complete the survey. The letter provided a URL for the online survey; a toll-free call-in number; a password to enter on the online survey’s landing page, or tell the telephone interviewers if they chose to call in;... If two or more adults were in the household, the letter asked the adult with the next birthday to complete the survey. Nonresponding households were later sent a reminder postcard and then a reminder letter via first-class mail. After the web portion of the data collection period had ended, SSRS sent nonresponding households with a deliverable address a 9-by-12-inch Priority Mail window envelope.

The Priority envelope contained a letter with a FAQ section printed on the reverse side, a visible $5 bill, a paper version of the survey and a postage-paid return envelope. The paper survey was one 11-by-17-inch page folded booklet-style. The within-household selection instructions were identical to those used in the earlier online survey request. The same households were later sent a second envelope containing another copy of the paper questionnaire by first-class mail. The initial mailing was sent out in two separate launches: soft launch and full launch. The soft launch made up 5% of the sample and was sent out several days earlier than the full launch.

The full launch consisted of the remaining sample.

People Also Search

• National Public Opinion Reference Survey (NPORS) - SSRS
• The National Public Opinion Reference Survey (NPORS)
• National Public Opinion Reference Survey (NPORS)
• How Pew Research Center Uses Its National Public Opinion Reference ...
• PDF 2025 National Public Opinion Reference Survey Methodology
• National Public Opinion Survey: Methodology & Findings | Course Hero
• SSRS ABS Innovations Archives - SSRS
• National Public Opinion Reference Survey, 2023.
• PDF National Public Opinion Reference Survey Methodology
• Methodology - Pew Research Center