- Membership: 16,118,169 (increase of 235,752 from 2016; a 1.48% annual increase)
- Congregations: 30,506 (increase of 202 from 2016; a 0.67% annual increase)
- Stakes: 3,341 (increase of 75 from 2016; a 2.3% annual increase)
- Districts: 553 (decrease of 3 from 2016; a 0.54% annual decrease)
- Missions: 421 (decrease of 1 from 2016; a 0.24% annual decrease)
- Convert Baptisms: 233,729 (decrease of 6,402 from 2016; a 2.74% annual decrease)
- Increase of Children on Record: 106,771 (decrease of 2,475 from 2016; a 2.27% annual decrease)
- Full-time missionaries: 67,049 (decrease of 3,897 from 2016; a 5.49% annual decrease)
- Church service missionaries: 36,172 (increase of 2,207 from 2016; a 6.50% annual increase)
There were many negative developments contained in the 2017 statistical report. Most alarming, LDS membership growth rates have decelerated to their lowest levels since 1937 at a mere 1.48% during 2017. Annual membership growth rates have steadily decelerated for more than 40 years from an average of 4-6% in the 1970s to approximately 4% in the 1980s, 3% in the 1990s, 2.5% in the 2000s, and 1.5-2.0% in the 2010s. However, this is primarily attributed to membership growth rates in the United States, Brazil, Mexico, the Philippines, Chile, and Peru during these decades. Global membership growth rates primarily reflect the Church's membership growth in the United States and the nine countries with the most church-reported members as the Church has historically reported approximately 70% of its annual membership increase in these 10 nations.
Slowing annual membership growth rates appear primarily a function of slightly decreasing numbers of converts baptized a year and slightly decreasing numbers of new unbaptized children added to church records. The number of convert baptisms in 2017 was the lowest reported by the Church since 1987 when there were 227,000 converts baptized. The all-time high for annual convert baptisms was set in 1990 at approximately 331,000 - 100,000 more converts baptized than in 2017 even though there were only 44,000 missionaries serving in 1990. Increase in children of record has remained above 100,000 since 2008 and has typically vacillated between 110,000 and 120,000. To contrast, annual increase in children of record was less than 100,000 between 1984 and 2007. Few convert baptisms has appeared primarily due to a lack of member-missionary participation, allocation of most full-time missionaries to countries with low or modest receptivity, a conservative implementation of the centers-of-strength policy, local leadership development problems, and quick-baptism tactics (e.g. cursory teaching that rushes prospective converts to membership) that sacrifice quality preparation and conversion in order to meet arbitrary baptismal goals on paper.
The difference between the summation of converts baptized and increase in children of record (e.g. converts baptized plus increase in children of record), and church-reported total membership between 2016 and 2017 (e.g. actual membership increase for the year) was 104,748 for 2017. This indicates that there were approximately 100,000 members who were removed from church records during 2017 due to death, children of record who were never baptized at baptismal age, excommunication, or resignation. This statistic has exceeded 100,000 for four years in a row but is lower than the all-time high set back in 2014 (122,903).
Congregational growth rates during 2017 also decelerated compared to 2016 to their lowest levels since 2011. However, worldwide congregational growth rates were primarily affected by scores of congregations closed in California during 2017, along with a slower-than-normal year for new ward/branch creations elsewhere in the United States. As a result, there was no noticeable change in the number of wards/branches in the United States during 2017, whereas there was an increase of approximately 200 congregations outside of the United States during the year. The Church has generally reported an annual increase of 200-250 congregations outside of the United States for the past four years, whereas it reported an annual increase of 100-150 congregations for most years between 2004 and 2013. Historically, the Church in the United States has reported an increase of approximately 100-200 congregations a year until 2016 when there was a net increase of 65 congregations for the year.