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- The US Constitution requires a nationwide population census every ten years. Article I, Section 2 mandates the enumeration of residents to determine how representation in the House of Representatives and direct taxes are apportioned among states.
- The Census Bureau must count residents across every state and US territory, down to individual city blocks. The video uses a block in Grand Junction, Colorado, with approximately a couple dozen residents to demonstrate how a national count of more than 300 million people is organized.
- The 2020 Census was planned as a $15.6 billion operation requiring approximately a decade of preparation and one year of execution. The scale reflects the difficulty of identifying residences, contacting households, employing temporary workers, collecting responses, and producing reliable population statistics.
- Preparation for the 2020 Census began on November 1, 2011. The Census Bureau started planning more than eight years before the actual population count.
- Approximately 4,000 permanent Census Bureau employees manage census planning and other statistical programs. During the decennial count, the agency expands its workforce by hiring more than half a million temporary workers.
- The first draft of the 2020 Census operational plan was completed in late 2015. Bureau employees then spent approximately three years refining the procedures, staffing arrangements, and logistical requirements.
- The Census Bureau divides the United States into six administrative regions. Permanent regional offices are located in Los Angeles, Denver, Chicago, Atlanta, Philadelphia, and New York City.
- The Bureau planned to open 248 temporary field offices to manage local census operations. Offices are distributed according to population density and operational needs, with Colorado assigned four offices and New York assigned 21.
- Each temporary field office must recruit hundreds or thousands of enumerators. These workers visit residences, follow up with households that have not responded, and perform other local counting operations.
- Recruiting more than 500,000 temporary workers was a major challenge for the 2020 Census. The video identifies historically low unemployment as an additional difficulty because fewer people were available or interested in temporary employment.
- Enumerator wages vary substantially by location to reflect local labor markets. Workers in Mesa County, Colorado, were offered $16 per hour, while those in New York City were offered between $25 and $28 per hour.
- The first temporary employees for the 2020 Census were hired in mid-2018. Their early work included identifying and verifying residential addresses before the main population count began.
- The Census Bureau must locate residences before it can count the people living in them. Over a decade, new homes may be constructed, existing buildings divided into multiple residences, and other changes made that could cause an outdated address list to miss people.
- Unconventional living arrangements must also be identified. Examples include someone living in an alley, a person occupying a motorhome parked in a driveway, and other residences that do not resemble conventional houses.
- The 2020 Census introduced greater reliance on satellite imagery to identify residential structures. Previous censuses relied more heavily on workers walking through neighborhoods and recording residences individually, requiring substantial labor.
- Satellite imagery cannot reliably determine every residential arrangement. A building might contain one household or two, so the Bureau continued sending workers to inspect locations where aerial information was ambiguous.
- The address-verification process was intended to produce a comprehensive national inventory of places where people lived. Accuracy at this stage was important because an unidentified residence might otherwise receive no census invitation.
- The Census Bureau submitted its proposed 2020 questionnaire to Congress in 2018. The form was deliberately short to encourage participation, but even small changes required extensive analysis.
- The questionnaire contained four background questions, five questions about the primary household resident, and seven questions about each additional resident. The Bureau published a 98-page document explaining the selection and wording of its questions.
- The 2020 questionnaire explicitly distinguished same-sex and opposite-sex spouses and unmarried partners. Previous questionnaires identified spouses and unmarried partners without directly specifying whether the relationship was same-sex or opposite-sex.
- Earlier census methods inferred whether couples were same-sex from their recorded sexes. This introduced a statistical problem because one incorrect response to a sex question could cause an opposite-sex couple to be classified as a same-sex couple.
- Even a small number of reporting errors could significantly distort statistics about same-sex couples. Because such couples represented a relatively small proportion of all couples, mistakes involving opposite-sex households could produce disproportionate measurement errors.
- The revised relationship question was designed to reduce misclassification. Directly recording whether a relationship was same-sex or opposite-sex provided an additional check against mistakes elsewhere in the questionnaire.
- The Census Bureau divided the country into four categories based on the most effective way to contact residents. The categories accounted for differences in internet use, age, language, and accessibility rather than relying on one identical questionnaire-delivery method.
- Most households in Grand Junction, Colorado, were assigned to receive mailed invitations to complete the census online. This was also the standard approach for much of the United States.
- Approximately 22% of the country was classified as less likely to respond online and was assigned paper questionnaires alongside online invitations. The video highlights a section of Grand Junction containing assisted-living facilities and many older residents as an example.
- Areas with substantial Spanish-speaking populations could receive bilingual online invitations. Eagle County, Colorado, was cited because approximately one-third of its population was of Hispanic origin and some residents had limited English proficiency.
- Areas combining significant Spanish-speaking populations with limited internet access were assigned bilingual paper questionnaires. Costilla County, Colorado, was presented as an example of this fourth contact category.
- The 2020 Census had a 366-day calendar-year window for collecting and delivering its population count. The video described the requirement to complete the count and report it to Congress by December 31, 2020.
- The first communities scheduled for enumeration were in rural Alaska rather than the continental United States. Census workers were expected to begin in Toksook Bay in late January 2020.
- Approximately 200 rural Alaskan communities required unusually early counting because of seasonal transportation conditions. Frozen ground and waterways allow relatively easy winter travel by snowmobile, while melting ice and snow make movement more difficult later in the year.
- Approximately 95% of American households were scheduled to receive mailed census invitations in mid-March 2020. These invitations generally directed residents to respond online, with additional paper questionnaires supplied where appropriate.
- Approximately 4% of households required hand-delivered census materials. This method was intended for locations where normal residential mail delivery was unsuitable, including some mobile homes, disaster-affected areas, and households relying on post office boxes.
- Fewer than 1% of households were assigned in-person enumeration from the beginning. These were primarily in especially remote parts of Alaska and Maine and on certain American Indian reservations.
- Households failing to answer the first invitation were scheduled to receive four additional mailings. The sequence consisted of a reminder letter, reminder postcard, reminder letter containing a paper questionnaire, and final reminder postcard.
- Residents could respond through the internet, by mail, or by telephone. The repeated contacts were intended to secure a response without requiring the more expensive step of sending someone to the residence.
- Approximately one-third of households were expected not to respond on time despite participation being legally required. These households would need additional follow-up, substantially increasing the workload of field enumerators.
- In-person follow-up visits were scheduled according to the risk of losing access to particular populations. College dormitories and student housing were prioritized because students typically begin leaving those residences in mid-May.
- Nonresponding households faced a multi-stage process of personal visits and inquiries with neighbors. After three unsuccessful visits, enumerators could seek information from neighbors during the fourth attempt, with further attempts involving both the household and neighbors.
- The video's described follow-up procedure allowed five mailings, six household visits, and three attempts to obtain information from neighbors. If no response or useful information could be obtained, the residence could ultimately be classified as uninhabited.
- Neighbor inquiries offered an alternative way to obtain household information when residents could not be contacted directly. Enumerators could ask nearby residents what they knew about the people occupying a nonresponding address.
- The census also needed separate procedures for people without conventional household addresses. Counting occupied houses alone would omit people experiencing homelessness and others living outside ordinary residential arrangements.
- People experiencing homelessness were to be counted through shelters, soup kitchens, food vans, and street outreach. These operations were intended to reach people who might never receive or answer a household questionnaire.
- People living and working aboard American vessels without permanent land-based residences required a specialized counting program. The Maritime and Military Vessel Enumeration program covered the particular circumstances of seafarers and people aboard military vessels.
- Ships participating in the maritime enumeration received census kits containing specially adapted questionnaires. Their questions differed from ordinary household forms to reflect the circumstances of people living or working at sea.
- Completed maritime questionnaires were returned to the Census Bureau for inclusion in the population count. The agency also employed procedures intended to prevent people from being counted more than once.
- The second half of 2020 was expected to involve completing personal visits, concluding specialized counting operations, and processing the collected information. The Bureau then had to reconcile the results and produce its most accurate possible population figures.
- The census produces far more information than a single national population total. Results are organized by state, county, town, race, age, relationship status, and numerous other demographic and geographic characteristics.
- Population totals determine how seats in the US House of Representatives are redistributed among states. The census deadline was tied to Congress's need for updated state populations to carry out this reapportionment.
- The 2010 Census counted 308,745,538 US residents. This was the official national population figure used as the comparison point in the video.
- The 2020 population was projected in the video to reach approximately 330 million. That number was an estimate made before completion of the census, not a confirmed result.
- The final population figure depended on successfully combining several different counting methods. Residential address verification, online responses, paper questionnaires, telephone responses, personal visits, special population operations, and duplicate-prevention procedures all contributed to the national enumeration.
- Census accuracy depended on adapting procedures to different populations and local conditions. The operational examples showed why older residents, people with limited English proficiency, remote communities, college students, people experiencing homelessness, and maritime workers could not all be reached effectively through the same process.